Home / 781,548.75-1,078,537.28-442,009.71

Finding the Fourth Proportional to 781,548.75, 1,078,537.28 and 442,009.71

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Solution

The fourth proportional to 781,548.75, 1,078,537.28 and 442,009.71 is: 609,973.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,548.75 : 1,078,537.28 = 442,009.71 : x
  2. Step 2: Convert to fraction form
    781,548.75/1,078,537.28 = 442,009.71/x
  3. Step 3: Cross multiply
    781,548.75x = 1,078,537.28 × 442,009.71
  4. Step 4: Simplify right side
    781,548.75x = 476,723,948,146.94
  5. Step 5: Solve for x
    x = 476,723,948,146.94/781,548.75
  6. Step 6: Final answer
    x = 609,973.40

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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.