Home / 718,319.36-991,235.04-396,011.84

Finding the Fourth Proportional to 718,319.36, 991,235.04 and 396,011.84

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Solution

The fourth proportional to 718,319.36, 991,235.04 and 396,011.84 is: 546,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,319.36 : 991,235.04 = 396,011.84 : x
  2. Step 2: Convert to fraction form
    718,319.36/991,235.04 = 396,011.84/x
  3. Step 3: Cross multiply
    718,319.36x = 991,235.04 × 396,011.84
  4. Step 4: Simplify right side
    718,319.36x = 392,540,812,062.87
  5. Step 5: Solve for x
    x = 392,540,812,062.87/718,319.36
  6. Step 6: Final answer
    x = 546,471.16

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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.