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Finding the Fourth Proportional to 578,853.70, 868,280.55 and 508,869.70

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Solution

The fourth proportional to 578,853.70, 868,280.55 and 508,869.70 is: 763,304.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,853.70 : 868,280.55 = 508,869.70 : x
  2. Step 2: Convert to fraction form
    578,853.70/868,280.55 = 508,869.70/x
  3. Step 3: Cross multiply
    578,853.70x = 868,280.55 × 508,869.70
  4. Step 4: Simplify right side
    578,853.70x = 441,841,662,994.34
  5. Step 5: Solve for x
    x = 441,841,662,994.34/578,853.70
  6. Step 6: Final answer
    x = 763,304.55

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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.