Home / 853,998.81-1,281,020.90-373,978.64

Finding the Fourth Proportional to 853,998.81, 1,281,020.90 and 373,978.64

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Solution

The fourth proportional to 853,998.81, 1,281,020.90 and 373,978.64 is: 560,977.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,998.81 : 1,281,020.90 = 373,978.64 : x
  2. Step 2: Convert to fraction form
    853,998.81/1,281,020.90 = 373,978.64/x
  3. Step 3: Cross multiply
    853,998.81x = 1,281,020.90 × 373,978.64
  4. Step 4: Simplify right side
    853,998.81x = 479,074,445,718.58
  5. Step 5: Solve for x
    x = 479,074,445,718.58/853,998.81
  6. Step 6: Final answer
    x = 560,977.88

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Double scale
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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.