Home / 855,248.34-1,283,114.70-428,268.72

Finding the Fourth Proportional to 855,248.34, 1,283,114.70 and 428,268.72

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Solution

The fourth proportional to 855,248.34, 1,283,114.70 and 428,268.72 is: 642,524.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,248.34 : 1,283,114.70 = 428,268.72 : x
  2. Step 2: Convert to fraction form
    855,248.34/1,283,114.70 = 428,268.72/x
  3. Step 3: Cross multiply
    855,248.34x = 1,283,114.70 × 428,268.72
  4. Step 4: Simplify right side
    855,248.34x = 549,517,890,182.18
  5. Step 5: Solve for x
    x = 549,517,890,182.18/855,248.34
  6. Step 6: Final answer
    x = 642,524.36

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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.