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Finding the Fourth Proportional to 584,199.40, 876,299.10 and 485,784.40

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Solution

The fourth proportional to 584,199.40, 876,299.10 and 485,784.40 is: 728,676.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,199.40 : 876,299.10 = 485,784.40 : x
  2. Step 2: Convert to fraction form
    584,199.40/876,299.10 = 485,784.40/x
  3. Step 3: Cross multiply
    584,199.40x = 876,299.10 × 485,784.40
  4. Step 4: Simplify right side
    584,199.40x = 425,692,432,514.04
  5. Step 5: Solve for x
    x = 425,692,432,514.04/584,199.40
  6. Step 6: Final answer
    x = 728,676.60

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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.