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Finding the Fourth Proportional to 425,045.07, 634,252.28 and 387,319.32

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Solution

The fourth proportional to 425,045.07, 634,252.28 and 387,319.32 is: 577,957.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,045.07 : 634,252.28 = 387,319.32 : x
  2. Step 2: Convert to fraction form
    425,045.07/634,252.28 = 387,319.32/x
  3. Step 3: Cross multiply
    425,045.07x = 634,252.28 × 387,319.32
  4. Step 4: Simplify right side
    425,045.07x = 245,658,159,861.45
  5. Step 5: Solve for x
    x = 245,658,159,861.45/425,045.07
  6. Step 6: Final answer
    x = 577,957.91

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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.