Home / 718,928.32-992,116.16-396,652.16

Finding the Fourth Proportional to 718,928.32, 992,116.16 and 396,652.16

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Solution

The fourth proportional to 718,928.32, 992,116.16 and 396,652.16 is: 547,377.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,928.32 : 992,116.16 = 396,652.16 : x
  2. Step 2: Convert to fraction form
    718,928.32/992,116.16 = 396,652.16/x
  3. Step 3: Cross multiply
    718,928.32x = 992,116.16 × 396,652.16
  4. Step 4: Simplify right side
    718,928.32x = 393,525,017,834.91
  5. Step 5: Solve for x
    x = 393,525,017,834.91/718,928.32
  6. Step 6: Final answer
    x = 547,377.27

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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.