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Finding the Fourth Proportional to 485,502.54, 670,280.48 and 431,638.54

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Solution

The fourth proportional to 485,502.54, 670,280.48 and 431,638.54 is: 595,916.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,502.54 : 670,280.48 = 431,638.54 : x
  2. Step 2: Convert to fraction form
    485,502.54/670,280.48 = 431,638.54/x
  3. Step 3: Cross multiply
    485,502.54x = 670,280.48 × 431,638.54
  4. Step 4: Simplify right side
    485,502.54x = 289,318,887,777.70
  5. Step 5: Solve for x
    x = 289,318,887,777.70/485,502.54
  6. Step 6: Final answer
    x = 595,916.32

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1.5x scale

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.