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Finding the Fourth Proportional to 564,772.58, 779,387.10 and 310,139.90

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Solution

The fourth proportional to 564,772.58, 779,387.10 and 310,139.90 is: 427,993.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,772.58 : 779,387.10 = 310,139.90 : x
  2. Step 2: Convert to fraction form
    564,772.58/779,387.10 = 310,139.90/x
  3. Step 3: Cross multiply
    564,772.58x = 779,387.10 × 310,139.90
  4. Step 4: Simplify right side
    564,772.58x = 241,719,037,255.29
  5. Step 5: Solve for x
    x = 241,719,037,255.29/564,772.58
  6. Step 6: Final answer
    x = 427,993.58

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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.