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Finding the Fourth Proportional to 424,620.72, 586,817.28 and 348,019.20

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Solution

The fourth proportional to 424,620.72, 586,817.28 and 348,019.20 is: 480,955.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,620.72 : 586,817.28 = 348,019.20 : x
  2. Step 2: Convert to fraction form
    424,620.72/586,817.28 = 348,019.20/x
  3. Step 3: Cross multiply
    424,620.72x = 586,817.28 × 348,019.20
  4. Step 4: Simplify right side
    424,620.72x = 204,223,680,331.78
  5. Step 5: Solve for x
    x = 204,223,680,331.78/424,620.72
  6. Step 6: Final answer
    x = 480,955.52

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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.