Home / 783,373.71-1,175,392.85-427,972.55

Finding the Fourth Proportional to 783,373.71, 1,175,392.85 and 427,972.55

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Solution

The fourth proportional to 783,373.71, 1,175,392.85 and 427,972.55 is: 642,140.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    783,373.71 : 1,175,392.85 = 427,972.55 : x
  2. Step 2: Convert to fraction form
    783,373.71/1,175,392.85 = 427,972.55/x
  3. Step 3: Cross multiply
    783,373.71x = 1,175,392.85 × 427,972.55
  4. Step 4: Simplify right side
    783,373.71x = 503,035,876,064.89
  5. Step 5: Solve for x
    x = 503,035,876,064.89/783,373.71
  6. Step 6: Final answer
    x = 642,140.36

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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.