Home / 520,710,397.34-718,564,160.85-285,755,016.74

Finding the Fourth Proportional to 520,710,397.34, 718,564,160.85 and 285,755,016.74

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Solution

The fourth proportional to 520,710,397.34, 718,564,160.85 and 285,755,016.74 is: 394,333,039.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,710,397.34 : 718,564,160.85 = 285,755,016.74 : x
  2. Step 2: Convert to fraction form
    520,710,397.34/718,564,160.85 = 285,755,016.74/x
  3. Step 3: Cross multiply
    520,710,397.34x = 718,564,160.85 × 285,755,016.74
  4. Step 4: Simplify right side
    520,710,397.34x = 205,333,313,812,455,808
  5. Step 5: Solve for x
    x = 205,333,313,812,455,808/520,710,397.34
  6. Step 6: Final answer
    x = 394,333,039.75

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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.