Home / 912,000.80-1,368,001.20-492,096.80

Finding the Fourth Proportional to 912,000.80, 1,368,001.20 and 492,096.80

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Solution

The fourth proportional to 912,000.80, 1,368,001.20 and 492,096.80 is: 738,145.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,000.80 : 1,368,001.20 = 492,096.80 : x
  2. Step 2: Convert to fraction form
    912,000.80/1,368,001.20 = 492,096.80/x
  3. Step 3: Cross multiply
    912,000.80x = 1,368,001.20 × 492,096.80
  4. Step 4: Simplify right side
    912,000.80x = 673,189,012,916.16
  5. Step 5: Solve for x
    x = 673,189,012,916.16/912,000.80
  6. Step 6: Final answer
    x = 738,145.20

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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.