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Finding the Fourth Proportional to 584,420.40, 876,630.60 and 486,005.40

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Solution

The fourth proportional to 584,420.40, 876,630.60 and 486,005.40 is: 729,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,420.40 : 876,630.60 = 486,005.40 : x
  2. Step 2: Convert to fraction form
    584,420.40/876,630.60 = 486,005.40/x
  3. Step 3: Cross multiply
    584,420.40x = 876,630.60 × 486,005.40
  4. Step 4: Simplify right side
    584,420.40x = 426,047,205,405.24
  5. Step 5: Solve for x
    x = 426,047,205,405.24/584,420.40
  6. Step 6: Final answer
    x = 729,008.10

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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.