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Finding the Fourth Proportional to 564,970.20, 779,663.52 and 310,327.08

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Solution

The fourth proportional to 564,970.20, 779,663.52 and 310,327.08 is: 428,253.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,970.20 : 779,663.52 = 310,327.08 : x
  2. Step 2: Convert to fraction form
    564,970.20/779,663.52 = 310,327.08/x
  3. Step 3: Cross multiply
    564,970.20x = 779,663.52 × 310,327.08
  4. Step 4: Simplify right side
    564,970.20x = 241,950,703,544.12
  5. Step 5: Solve for x
    x = 241,950,703,544.12/564,970.20
  6. Step 6: Final answer
    x = 428,253.92

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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.