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Finding the Fourth Proportional to 835,780.56, 1,153,479.12 and 491,600.16

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Solution

The fourth proportional to 835,780.56, 1,153,479.12 and 491,600.16 is: 678,468.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    835,780.56 : 1,153,479.12 = 491,600.16 : x
  2. Step 2: Convert to fraction form
    835,780.56/1,153,479.12 = 491,600.16/x
  3. Step 3: Cross multiply
    835,780.56x = 1,153,479.12 × 491,600.16
  4. Step 4: Simplify right side
    835,780.56x = 567,050,519,948.66
  5. Step 5: Solve for x
    x = 567,050,519,948.66/835,780.56
  6. Step 6: Final answer
    x = 678,468.19

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Double scale
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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.