Home / 921,788.28-1,382,680.80-360,429.12

Finding the Fourth Proportional to 921,788.28, 1,382,680.80 and 360,429.12

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Solution

The fourth proportional to 921,788.28, 1,382,680.80 and 360,429.12 is: 540,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,788.28 : 1,382,680.80 = 360,429.12 : x
  2. Step 2: Convert to fraction form
    921,788.28/1,382,680.80 = 360,429.12/x
  3. Step 3: Cross multiply
    921,788.28x = 1,382,680.80 × 360,429.12
  4. Step 4: Simplify right side
    921,788.28x = 498,358,423,984.90
  5. Step 5: Solve for x
    x = 498,358,423,984.90/921,788.28
  6. Step 6: Final answer
    x = 540,643.05

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Double scale
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Similar ratio
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1.5x scale

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.