Home / 1,398,319,325,131.70-1,929,660,132,325.50-781,031,051,680.42

Finding the Fourth Proportional to 1,398,319,325,131.70, 1,929,660,132,325.50 and 781,031,051,680.42

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Solution

The fourth proportional to 1,398,319,325,131.70, 1,929,660,132,325.50 and 781,031,051,680.42 is: 1,077,811,380,740.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,319,325,131.70 : 1,929,660,132,325.50 = 781,031,051,680.42 : x
  2. Step 2: Convert to fraction form
    1,398,319,325,131.70/1,929,660,132,325.50 = 781,031,051,680.42/x
  3. Step 3: Cross multiply
    1,398,319,325,131.70x = 1,929,660,132,325.50 × 781,031,051,680.42
  4. Step 4: Simplify right side
    1,398,319,325,131.70x = 1,507,124,482,535,963,699,970,048
  5. Step 5: Solve for x
    x = 1,507,124,482,535,963,699,970,048/1,398,319,325,131.70
  6. Step 6: Final answer
    x = 1,077,811,380,740.24

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.