Home / 1,398,853,051.43-1,929,720,315.40-833,939,876.67

Finding the Fourth Proportional to 1,398,853,051.43, 1,929,720,315.40 and 833,939,876.67

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Solution

The fourth proportional to 1,398,853,051.43, 1,929,720,315.40 and 833,939,876.67 is: 1,150,421,568.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,398,853,051.43 : 1,929,720,315.40 = 833,939,876.67 : x
  2. Step 2: Convert to fraction form
    1,398,853,051.43/1,929,720,315.40 = 833,939,876.67/x
  3. Step 3: Cross multiply
    1,398,853,051.43x = 1,929,720,315.40 × 833,939,876.67
  4. Step 4: Simplify right side
    1,398,853,051.43x = 1,609,270,721,832,269,568
  5. Step 5: Solve for x
    x = 1,609,270,721,832,269,568/1,398,853,051.43
  6. Step 6: Final answer
    x = 1,150,421,568.72

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Double scale
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1.5x scale

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.