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Finding the Fourth Proportional to 583,905.80, 875,858.70 and 489,427.40

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Solution

The fourth proportional to 583,905.80, 875,858.70 and 489,427.40 is: 734,141.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,905.80 : 875,858.70 = 489,427.40 : x
  2. Step 2: Convert to fraction form
    583,905.80/875,858.70 = 489,427.40/x
  3. Step 3: Cross multiply
    583,905.80x = 875,858.70 × 489,427.40
  4. Step 4: Simplify right side
    583,905.80x = 428,669,246,308.38
  5. Step 5: Solve for x
    x = 428,669,246,308.38/583,905.80
  6. Step 6: Final answer
    x = 734,141.10

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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.