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Finding the Fourth Proportional to 604,631.60, 906,947.40 and 511,319.60

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Solution

The fourth proportional to 604,631.60, 906,947.40 and 511,319.60 is: 766,979.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,631.60 : 906,947.40 = 511,319.60 : x
  2. Step 2: Convert to fraction form
    604,631.60/906,947.40 = 511,319.60/x
  3. Step 3: Cross multiply
    604,631.60x = 906,947.40 × 511,319.60
  4. Step 4: Simplify right side
    604,631.60x = 463,739,981,789.04
  5. Step 5: Solve for x
    x = 463,739,981,789.04/604,631.60
  6. Step 6: Final answer
    x = 766,979.40

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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.