Home / 607,394,821.20-912,545,717.42-389,472,123.12

Finding the Fourth Proportional to 607,394,821.20, 912,545,717.42 and 389,472,123.12

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Solution

The fourth proportional to 607,394,821.20, 912,545,717.42 and 389,472,123.12 is: 585,140,184.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,394,821.20 : 912,545,717.42 = 389,472,123.12 : x
  2. Step 2: Convert to fraction form
    607,394,821.20/912,545,717.42 = 389,472,123.12/x
  3. Step 3: Cross multiply
    607,394,821.20x = 912,545,717.42 × 389,472,123.12
  4. Step 4: Simplify right side
    607,394,821.20x = 355,411,118,007,630,976
  5. Step 5: Solve for x
    x = 355,411,118,007,630,976/607,394,821.20
  6. Step 6: Final answer
    x = 585,140,184.94

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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.