Home / 692,544.30-1,038,816.45-319,296.30

Finding the Fourth Proportional to 692,544.30, 1,038,816.45 and 319,296.30

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Solution

The fourth proportional to 692,544.30, 1,038,816.45 and 319,296.30 is: 478,944.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,544.30 : 1,038,816.45 = 319,296.30 : x
  2. Step 2: Convert to fraction form
    692,544.30/1,038,816.45 = 319,296.30/x
  3. Step 3: Cross multiply
    692,544.30x = 1,038,816.45 × 319,296.30
  4. Step 4: Simplify right side
    692,544.30x = 331,690,248,864.14
  5. Step 5: Solve for x
    x = 331,690,248,864.14/692,544.30
  6. Step 6: Final answer
    x = 478,944.45

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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.