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Finding the Fourth Proportional to 544,748.70, 817,123.05 and 520,254.30

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Solution

The fourth proportional to 544,748.70, 817,123.05 and 520,254.30 is: 780,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,748.70 : 817,123.05 = 520,254.30 : x
  2. Step 2: Convert to fraction form
    544,748.70/817,123.05 = 520,254.30/x
  3. Step 3: Cross multiply
    544,748.70x = 817,123.05 × 520,254.30
  4. Step 4: Simplify right side
    544,748.70x = 425,111,780,391.62
  5. Step 5: Solve for x
    x = 425,111,780,391.62/544,748.70
  6. Step 6: Final answer
    x = 780,381.45

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Double scale
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Similar ratio
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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.