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Finding the Fourth Proportional to 493,630.20, 740,445.30 and 283,289.40

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Solution

The fourth proportional to 493,630.20, 740,445.30 and 283,289.40 is: 424,934.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,630.20 : 740,445.30 = 283,289.40 : x
  2. Step 2: Convert to fraction form
    493,630.20/740,445.30 = 283,289.40/x
  3. Step 3: Cross multiply
    493,630.20x = 740,445.30 × 283,289.40
  4. Step 4: Simplify right side
    493,630.20x = 209,760,304,769.82
  5. Step 5: Solve for x
    x = 209,760,304,769.82/493,630.20
  6. Step 6: Final answer
    x = 424,934.10

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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.