Home / 442,025,307.90-661,762,503.45-391,006,971.90

Finding the Fourth Proportional to 442,025,307.90, 661,762,503.45 and 391,006,971.90

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Solution

The fourth proportional to 442,025,307.90, 661,762,503.45 and 391,006,971.90 is: 585,382,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,025,307.90 : 661,762,503.45 = 391,006,971.90 : x
  2. Step 2: Convert to fraction form
    442,025,307.90/661,762,503.45 = 391,006,971.90/x
  3. Step 3: Cross multiply
    442,025,307.90x = 661,762,503.45 × 391,006,971.90
  4. Step 4: Simplify right side
    442,025,307.90x = 258,753,752,590,947,808
  5. Step 5: Solve for x
    x = 258,753,752,590,947,808/442,025,307.90
  6. Step 6: Final answer
    x = 585,382,212.21

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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.