Home / 639,988.28-883,166.88-353,502.20

Finding the Fourth Proportional to 639,988.28, 883,166.88 and 353,502.20

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Solution

The fourth proportional to 639,988.28, 883,166.88 and 353,502.20 is: 487,823.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,988.28 : 883,166.88 = 353,502.20 : x
  2. Step 2: Convert to fraction form
    639,988.28/883,166.88 = 353,502.20/x
  3. Step 3: Cross multiply
    639,988.28x = 883,166.88 × 353,502.20
  4. Step 4: Simplify right side
    639,988.28x = 312,201,435,047.14
  5. Step 5: Solve for x
    x = 312,201,435,047.14/639,988.28
  6. Step 6: Final answer
    x = 487,823.68

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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.