Home / 990,052.11-1,485,702.90-421,432.29

Finding the Fourth Proportional to 990,052.11, 1,485,702.90 and 421,432.29

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Solution

The fourth proportional to 990,052.11, 1,485,702.90 and 421,432.29 is: 632,414.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,052.11 : 1,485,702.90 = 421,432.29 : x
  2. Step 2: Convert to fraction form
    990,052.11/1,485,702.90 = 421,432.29/x
  3. Step 3: Cross multiply
    990,052.11x = 1,485,702.90 × 421,432.29
  4. Step 4: Simplify right side
    990,052.11x = 626,123,175,406.64
  5. Step 5: Solve for x
    x = 626,123,175,406.64/990,052.11
  6. Step 6: Final answer
    x = 632,414.36

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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.