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Finding the Fourth Proportional to 520,013.39, 779,484.87 and 253,444.14

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Solution

The fourth proportional to 520,013.39, 779,484.87 and 253,444.14 is: 379,905.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,013.39 : 779,484.87 = 253,444.14 : x
  2. Step 2: Convert to fraction form
    520,013.39/779,484.87 = 253,444.14/x
  3. Step 3: Cross multiply
    520,013.39x = 779,484.87 × 253,444.14
  4. Step 4: Simplify right side
    520,013.39x = 197,555,872,520.16
  5. Step 5: Solve for x
    x = 197,555,872,520.16/520,013.39
  6. Step 6: Final answer
    x = 379,905.36

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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.