Home / 717,630,973.85-990,331,411.31-387,606,112.85

Finding the Fourth Proportional to 717,630,973.85, 990,331,411.31 and 387,606,112.85

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Solution

The fourth proportional to 717,630,973.85, 990,331,411.31 and 387,606,112.85 is: 534,896,796.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,630,973.85 : 990,331,411.31 = 387,606,112.85 : x
  2. Step 2: Convert to fraction form
    717,630,973.85/990,331,411.31 = 387,606,112.85/x
  3. Step 3: Cross multiply
    717,630,973.85x = 990,331,411.31 × 387,606,112.85
  4. Step 4: Simplify right side
    717,630,973.85x = 383,858,508,773,115,008
  5. Step 5: Solve for x
    x = 383,858,508,773,115,008/717,630,973.85
  6. Step 6: Final answer
    x = 534,896,796.21

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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.