Home / 918,008.60-1,377,012.90-498,104.60

Finding the Fourth Proportional to 918,008.60, 1,377,012.90 and 498,104.60

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Solution

The fourth proportional to 918,008.60, 1,377,012.90 and 498,104.60 is: 747,156.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,008.60 : 1,377,012.90 = 498,104.60 : x
  2. Step 2: Convert to fraction form
    918,008.60/1,377,012.90 = 498,104.60/x
  3. Step 3: Cross multiply
    918,008.60x = 1,377,012.90 × 498,104.60
  4. Step 4: Simplify right side
    918,008.60x = 685,896,459,749.34
  5. Step 5: Solve for x
    x = 685,896,459,749.34/918,008.60
  6. Step 6: Final answer
    x = 747,156.90

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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.