Home / 983,500.40-1,475,250.60-318,652.40

Finding the Fourth Proportional to 983,500.40, 1,475,250.60 and 318,652.40

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Solution

The fourth proportional to 983,500.40, 1,475,250.60 and 318,652.40 is: 477,978.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    983,500.40 : 1,475,250.60 = 318,652.40 : x
  2. Step 2: Convert to fraction form
    983,500.40/1,475,250.60 = 318,652.40/x
  3. Step 3: Cross multiply
    983,500.40x = 1,475,250.60 × 318,652.40
  4. Step 4: Simplify right side
    983,500.40x = 470,092,144,291.44
  5. Step 5: Solve for x
    x = 470,092,144,291.44/983,500.40
  6. Step 6: Final answer
    x = 477,978.60

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Double scale
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Similar ratio
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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.