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Finding the Fourth Proportional to 564,775.48, 779,399.68 and 310,150.36

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Solution

The fourth proportional to 564,775.48, 779,399.68 and 310,150.36 is: 428,012.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,775.48 : 779,399.68 = 310,150.36 : x
  2. Step 2: Convert to fraction form
    564,775.48/779,399.68 = 310,150.36/x
  3. Step 3: Cross multiply
    564,775.48x = 779,399.68 × 310,150.36
  4. Step 4: Simplify right side
    564,775.48x = 241,731,088,612.01
  5. Step 5: Solve for x
    x = 241,731,088,612.01/564,775.48
  6. Step 6: Final answer
    x = 428,012.72

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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.