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Finding the Fourth Proportional to 584,872.80, 877,309.20 and 485,145.60

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Solution

The fourth proportional to 584,872.80, 877,309.20 and 485,145.60 is: 727,718.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,872.80 : 877,309.20 = 485,145.60 : x
  2. Step 2: Convert to fraction form
    584,872.80/877,309.20 = 485,145.60/x
  3. Step 3: Cross multiply
    584,872.80x = 877,309.20 × 485,145.60
  4. Step 4: Simplify right side
    584,872.80x = 425,622,698,219.52
  5. Step 5: Solve for x
    x = 425,622,698,219.52/584,872.80
  6. Step 6: Final answer
    x = 727,718.40

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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.