Home / 717,704,123.84-990,432,124.80-387,679,408.64

Finding the Fourth Proportional to 717,704,123.84, 990,432,124.80 and 387,679,408.64

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Solution

The fourth proportional to 717,704,123.84, 990,432,124.80 and 387,679,408.64 is: 534,997,818.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,704,123.84 : 990,432,124.80 = 387,679,408.64 : x
  2. Step 2: Convert to fraction form
    717,704,123.84/990,432,124.80 = 387,679,408.64/x
  3. Step 3: Cross multiply
    717,704,123.84x = 990,432,124.80 × 387,679,408.64
  4. Step 4: Simplify right side
    717,704,123.84x = 383,970,140,440,522,624
  5. Step 5: Solve for x
    x = 383,970,140,440,522,624/717,704,123.84
  6. Step 6: Final answer
    x = 534,997,818.30

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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.