Home / 261,645,607.40-392,468,411.10-79,892,493.80

Finding the Fourth Proportional to 261,645,607.40, 392,468,411.10 and 79,892,493.80

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Solution

The fourth proportional to 261,645,607.40, 392,468,411.10 and 79,892,493.80 is: 119,838,740.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,645,607.40 : 392,468,411.10 = 79,892,493.80 : x
  2. Step 2: Convert to fraction form
    261,645,607.40/392,468,411.10 = 79,892,493.80/x
  3. Step 3: Cross multiply
    261,645,607.40x = 392,468,411.10 × 79,892,493.80
  4. Step 4: Simplify right side
    261,645,607.40x = 31,355,280,100,502,600
  5. Step 5: Solve for x
    x = 31,355,280,100,502,600/261,645,607.40
  6. Step 6: Final answer
    x = 119,838,740.70

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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.