Home / 660,424,469.40-990,636,704.10-442,746,235.80

Finding the Fourth Proportional to 660,424,469.40, 990,636,704.10 and 442,746,235.80

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Solution

The fourth proportional to 660,424,469.40, 990,636,704.10 and 442,746,235.80 is: 664,119,353.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,424,469.40 : 990,636,704.10 = 442,746,235.80 : x
  2. Step 2: Convert to fraction form
    660,424,469.40/990,636,704.10 = 442,746,235.80/x
  3. Step 3: Cross multiply
    660,424,469.40x = 990,636,704.10 × 442,746,235.80
  4. Step 4: Simplify right side
    660,424,469.40x = 438,600,671,785,593,472
  5. Step 5: Solve for x
    x = 438,600,671,785,593,472/660,424,469.40
  6. Step 6: Final answer
    x = 664,119,353.70

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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.