Home / 1,129,748,369.52-1,559,012,985.90-621,107,379.48

Finding the Fourth Proportional to 1,129,748,369.52, 1,559,012,985.90 and 621,107,379.48

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Solution

The fourth proportional to 1,129,748,369.52, 1,559,012,985.90 and 621,107,379.48 is: 857,106,322.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,748,369.52 : 1,559,012,985.90 = 621,107,379.48 : x
  2. Step 2: Convert to fraction form
    1,129,748,369.52/1,559,012,985.90 = 621,107,379.48/x
  3. Step 3: Cross multiply
    1,129,748,369.52x = 1,559,012,985.90 × 621,107,379.48
  4. Step 4: Simplify right side
    1,129,748,369.52x = 968,314,470,247,639,296
  5. Step 5: Solve for x
    x = 968,314,470,247,639,296/1,129,748,369.52
  6. Step 6: Final answer
    x = 857,106,322.41

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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.