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Finding the Fourth Proportional to 407,423.20, 612,056.40 and 283,007.20

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Solution

The fourth proportional to 407,423.20, 612,056.40 and 283,007.20 is: 425,150.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,423.20 : 612,056.40 = 283,007.20 : x
  2. Step 2: Convert to fraction form
    407,423.20/612,056.40 = 283,007.20/x
  3. Step 3: Cross multiply
    407,423.20x = 612,056.40 × 283,007.20
  4. Step 4: Simplify right side
    407,423.20x = 173,216,368,006.08
  5. Step 5: Solve for x
    x = 173,216,368,006.08/407,423.20
  6. Step 6: Final answer
    x = 425,150.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.