Home / 646,429,128.15-969,779,873.13-209,695,711.17

Finding the Fourth Proportional to 646,429,128.15, 969,779,873.13 and 209,695,711.17

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Solution

The fourth proportional to 646,429,128.15, 969,779,873.13 and 209,695,711.17 is: 314,587,742.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,429,128.15 : 969,779,873.13 = 209,695,711.17 : x
  2. Step 2: Convert to fraction form
    646,429,128.15/969,779,873.13 = 209,695,711.17/x
  3. Step 3: Cross multiply
    646,429,128.15x = 969,779,873.13 × 209,695,711.17
  4. Step 4: Simplify right side
    646,429,128.15x = 203,358,680,169,498,816
  5. Step 5: Solve for x
    x = 203,358,680,169,498,816/646,429,128.15
  6. Step 6: Final answer
    x = 314,587,742.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.