Home / 661,964.20-992,946.30-396,543.40

Finding the Fourth Proportional to 661,964.20, 992,946.30 and 396,543.40

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Solution

The fourth proportional to 661,964.20, 992,946.30 and 396,543.40 is: 594,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,964.20 : 992,946.30 = 396,543.40 : x
  2. Step 2: Convert to fraction form
    661,964.20/992,946.30 = 396,543.40/x
  3. Step 3: Cross multiply
    661,964.20x = 992,946.30 × 396,543.40
  4. Step 4: Simplify right side
    661,964.20x = 393,746,301,819.42
  5. Step 5: Solve for x
    x = 393,746,301,819.42/661,964.20
  6. Step 6: Final answer
    x = 594,815.10

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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.