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Finding the Fourth Proportional to 854,854.56, 1,281,854.16 and 286,040.16

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Solution

The fourth proportional to 854,854.56, 1,281,854.16 and 286,040.16 is: 428,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,854.56 : 1,281,854.16 = 286,040.16 : x
  2. Step 2: Convert to fraction form
    854,854.56/1,281,854.16 = 286,040.16/x
  3. Step 3: Cross multiply
    854,854.56x = 1,281,854.16 × 286,040.16
  4. Step 4: Simplify right side
    854,854.56x = 366,661,769,023.07
  5. Step 5: Solve for x
    x = 366,661,769,023.07/854,854.56
  6. Step 6: Final answer
    x = 428,917.14

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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.