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Finding the Fourth Proportional to 564,930.52, 779,622.78 and 310,305.40

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Solution

The fourth proportional to 564,930.52, 779,622.78 and 310,305.40 is: 428,231.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,930.52 : 779,622.78 = 310,305.40 : x
  2. Step 2: Convert to fraction form
    564,930.52/779,622.78 = 310,305.40/x
  3. Step 3: Cross multiply
    564,930.52x = 779,622.78 × 310,305.40
  4. Step 4: Simplify right side
    564,930.52x = 241,921,158,597.01
  5. Step 5: Solve for x
    x = 241,921,158,597.01/564,930.52
  6. Step 6: Final answer
    x = 428,231.70

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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.