Home / 990,331.60-1,485,497.40-458,890.60

Finding the Fourth Proportional to 990,331.60, 1,485,497.40 and 458,890.60

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Solution

The fourth proportional to 990,331.60, 1,485,497.40 and 458,890.60 is: 688,335.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,331.60 : 1,485,497.40 = 458,890.60 : x
  2. Step 2: Convert to fraction form
    990,331.60/1,485,497.40 = 458,890.60/x
  3. Step 3: Cross multiply
    990,331.60x = 1,485,497.40 × 458,890.60
  4. Step 4: Simplify right side
    990,331.60x = 681,680,793,184.44
  5. Step 5: Solve for x
    x = 681,680,793,184.44/990,331.60
  6. Step 6: Final answer
    x = 688,335.90

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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.