Home / 916,078.10-1,374,405.15-442,778.90

Finding the Fourth Proportional to 916,078.10, 1,374,405.15 and 442,778.90

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Solution

The fourth proportional to 916,078.10, 1,374,405.15 and 442,778.90 is: 664,307.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,078.10 : 1,374,405.15 = 442,778.90 : x
  2. Step 2: Convert to fraction form
    916,078.10/1,374,405.15 = 442,778.90/x
  3. Step 3: Cross multiply
    916,078.10x = 1,374,405.15 × 442,778.90
  4. Step 4: Simplify right side
    916,078.10x = 608,557,600,471.34
  5. Step 5: Solve for x
    x = 608,557,600,471.34/916,078.10
  6. Step 6: Final answer
    x = 664,307.55

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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.