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Finding the Fourth Proportional to 420,225.52, 627,060.74 and 374,935.52

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Solution

The fourth proportional to 420,225.52, 627,060.74 and 374,935.52 is: 559,478.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,225.52 : 627,060.74 = 374,935.52 : x
  2. Step 2: Convert to fraction form
    420,225.52/627,060.74 = 374,935.52/x
  3. Step 3: Cross multiply
    420,225.52x = 627,060.74 × 374,935.52
  4. Step 4: Simplify right side
    420,225.52x = 235,107,345,543.67
  5. Step 5: Solve for x
    x = 235,107,345,543.67/420,225.52
  6. Step 6: Final answer
    x = 559,478.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.