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Finding the Fourth Proportional to 564,553.60, 779,102.40 and 322,748.80

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Solution

The fourth proportional to 564,553.60, 779,102.40 and 322,748.80 is: 445,403.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,553.60 : 779,102.40 = 322,748.80 : x
  2. Step 2: Convert to fraction form
    564,553.60/779,102.40 = 322,748.80/x
  3. Step 3: Cross multiply
    564,553.60x = 779,102.40 × 322,748.80
  4. Step 4: Simplify right side
    564,553.60x = 251,454,364,677.12
  5. Step 5: Solve for x
    x = 251,454,364,677.12/564,553.60
  6. Step 6: Final answer
    x = 445,403.88

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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.