Home / 912,032.80-1,368,049.20-492,128.80

Finding the Fourth Proportional to 912,032.80, 1,368,049.20 and 492,128.80

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Solution

The fourth proportional to 912,032.80, 1,368,049.20 and 492,128.80 is: 738,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,032.80 : 1,368,049.20 = 492,128.80 : x
  2. Step 2: Convert to fraction form
    912,032.80/1,368,049.20 = 492,128.80/x
  3. Step 3: Cross multiply
    912,032.80x = 1,368,049.20 × 492,128.80
  4. Step 4: Simplify right side
    912,032.80x = 673,256,411,136.96
  5. Step 5: Solve for x
    x = 673,256,411,136.96/912,032.80
  6. Step 6: Final answer
    x = 738,193.20

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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.