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Finding the Fourth Proportional to 578,553.60, 867,830.40 and 329,721.60

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Solution

The fourth proportional to 578,553.60, 867,830.40 and 329,721.60 is: 494,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,553.60 : 867,830.40 = 329,721.60 : x
  2. Step 2: Convert to fraction form
    578,553.60/867,830.40 = 329,721.60/x
  3. Step 3: Cross multiply
    578,553.60x = 867,830.40 × 329,721.60
  4. Step 4: Simplify right side
    578,553.60x = 286,142,428,016.64
  5. Step 5: Solve for x
    x = 286,142,428,016.64/578,553.60
  6. Step 6: Final answer
    x = 494,582.40

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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.