Home / 717,964.57-990,776.19-395,666.38

Finding the Fourth Proportional to 717,964.57, 990,776.19 and 395,666.38

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Solution

The fourth proportional to 717,964.57, 990,776.19 and 395,666.38 is: 546,011.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,964.57 : 990,776.19 = 395,666.38 : x
  2. Step 2: Convert to fraction form
    717,964.57/990,776.19 = 395,666.38/x
  3. Step 3: Cross multiply
    717,964.57x = 990,776.19 × 395,666.38
  4. Step 4: Simplify right side
    717,964.57x = 392,016,828,487.49
  5. Step 5: Solve for x
    x = 392,016,828,487.49/717,964.57
  6. Step 6: Final answer
    x = 546,011.38

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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.