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Finding the Fourth Proportional to 576,748.80, 865,123.20 and 547,880.40

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Solution

The fourth proportional to 576,748.80, 865,123.20 and 547,880.40 is: 821,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,748.80 : 865,123.20 = 547,880.40 : x
  2. Step 2: Convert to fraction form
    576,748.80/865,123.20 = 547,880.40/x
  3. Step 3: Cross multiply
    576,748.80x = 865,123.20 × 547,880.40
  4. Step 4: Simplify right side
    576,748.80x = 473,984,044,865.28
  5. Step 5: Solve for x
    x = 473,984,044,865.28/576,748.80
  6. Step 6: Final answer
    x = 821,820.60

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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.