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Finding the Fourth Proportional to 424,999.20, 637,498.80 and 397,005.60

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Solution

The fourth proportional to 424,999.20, 637,498.80 and 397,005.60 is: 595,508.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,999.20 : 637,498.80 = 397,005.60 : x
  2. Step 2: Convert to fraction form
    424,999.20/637,498.80 = 397,005.60/x
  3. Step 3: Cross multiply
    424,999.20x = 637,498.80 × 397,005.60
  4. Step 4: Simplify right side
    424,999.20x = 253,090,593,593.28
  5. Step 5: Solve for x
    x = 253,090,593,593.28/424,999.20
  6. Step 6: Final answer
    x = 595,508.40

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1.5x scale

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.