Home / 692,130.30-1,038,195.45-318,882.30

Finding the Fourth Proportional to 692,130.30, 1,038,195.45 and 318,882.30

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Solution

The fourth proportional to 692,130.30, 1,038,195.45 and 318,882.30 is: 478,323.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,130.30 : 1,038,195.45 = 318,882.30 : x
  2. Step 2: Convert to fraction form
    692,130.30/1,038,195.45 = 318,882.30/x
  3. Step 3: Cross multiply
    692,130.30x = 1,038,195.45 × 318,882.30
  4. Step 4: Simplify right side
    692,130.30x = 331,062,152,945.54
  5. Step 5: Solve for x
    x = 331,062,152,945.54/692,130.30
  6. Step 6: Final answer
    x = 478,323.45

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Half scale
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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.