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Finding the Fourth Proportional to 908,896.80, 1,363,345.20 and 655,642.20

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Solution

The fourth proportional to 908,896.80, 1,363,345.20 and 655,642.20 is: 983,463.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,896.80 : 1,363,345.20 = 655,642.20 : x
  2. Step 2: Convert to fraction form
    908,896.80/1,363,345.20 = 655,642.20/x
  3. Step 3: Cross multiply
    908,896.80x = 1,363,345.20 × 655,642.20
  4. Step 4: Simplify right side
    908,896.80x = 893,866,646,287.44
  5. Step 5: Solve for x
    x = 893,866,646,287.44/908,896.80
  6. Step 6: Final answer
    x = 983,463.30

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Half scale
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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.