Home / 687,492,602.17-948,762,707.45-386,131,020.73

Finding the Fourth Proportional to 687,492,602.17, 948,762,707.45 and 386,131,020.73

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Solution

The fourth proportional to 687,492,602.17, 948,762,707.45 and 386,131,020.73 is: 532,873,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,492,602.17 : 948,762,707.45 = 386,131,020.73 : x
  2. Step 2: Convert to fraction form
    687,492,602.17/948,762,707.45 = 386,131,020.73/x
  3. Step 3: Cross multiply
    687,492,602.17x = 948,762,707.45 × 386,131,020.73
  4. Step 4: Simplify right side
    687,492,602.17x = 366,346,712,658,226,880
  5. Step 5: Solve for x
    x = 366,346,712,658,226,880/687,492,602.17
  6. Step 6: Final answer
    x = 532,873,679.66

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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.