Home / 687,492,601.17-948,762,706.07-386,131,019.73

Finding the Fourth Proportional to 687,492,601.17, 948,762,706.07 and 386,131,019.73

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Solution

The fourth proportional to 687,492,601.17, 948,762,706.07 and 386,131,019.73 is: 532,873,678.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,492,601.17 : 948,762,706.07 = 386,131,019.73 : x
  2. Step 2: Convert to fraction form
    687,492,601.17/948,762,706.07 = 386,131,019.73/x
  3. Step 3: Cross multiply
    687,492,601.17x = 948,762,706.07 × 386,131,019.73
  4. Step 4: Simplify right side
    687,492,601.17x = 366,346,711,179,742,656
  5. Step 5: Solve for x
    x = 366,346,711,179,742,656/687,492,601.17
  6. Step 6: Final answer
    x = 532,873,678.28

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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.