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Finding the Fourth Proportional to 493,310.40, 740,743.20 and 283,358.40

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Solution

The fourth proportional to 493,310.40, 740,743.20 and 283,358.40 is: 425,484.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,310.40 : 740,743.20 = 283,358.40 : x
  2. Step 2: Convert to fraction form
    493,310.40/740,743.20 = 283,358.40/x
  3. Step 3: Cross multiply
    493,310.40x = 740,743.20 × 283,358.40
  4. Step 4: Simplify right side
    493,310.40x = 209,895,807,962.88
  5. Step 5: Solve for x
    x = 209,895,807,962.88/493,310.40
  6. Step 6: Final answer
    x = 425,484.25

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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.