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Finding the Fourth Proportional to 564,792.70, 779,419.34 and 310,149.22

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Solution

The fourth proportional to 564,792.70, 779,419.34 and 310,149.22 is: 428,008.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,792.70 : 779,419.34 = 310,149.22 : x
  2. Step 2: Convert to fraction form
    564,792.70/779,419.34 = 310,149.22/x
  3. Step 3: Cross multiply
    564,792.70x = 779,419.34 × 310,149.22
  4. Step 4: Simplify right side
    564,792.70x = 241,736,299,180.74
  5. Step 5: Solve for x
    x = 241,736,299,180.74/564,792.70
  6. Step 6: Final answer
    x = 428,008.90

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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.