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Finding the Fourth Proportional to 652,612.80, 900,300 and 423,242.64

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Solution

The fourth proportional to 652,612.80, 900,300 and 423,242.64 is: 583,876.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,612.80 : 900,300 = 423,242.64 : x
  2. Step 2: Convert to fraction form
    652,612.80/900,300 = 423,242.64/x
  3. Step 3: Cross multiply
    652,612.80x = 900,300 × 423,242.64
  4. Step 4: Simplify right side
    652,612.80x = 381,045,348,792
  5. Step 5: Solve for x
    x = 381,045,348,792/652,612.80
  6. Step 6: Final answer
    x = 583,876.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.