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Finding the Fourth Proportional to 580,543.20, 870,814.80 and 438,825.60

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Solution

The fourth proportional to 580,543.20, 870,814.80 and 438,825.60 is: 658,238.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,543.20 : 870,814.80 = 438,825.60 : x
  2. Step 2: Convert to fraction form
    580,543.20/870,814.80 = 438,825.60/x
  3. Step 3: Cross multiply
    580,543.20x = 870,814.80 × 438,825.60
  4. Step 4: Simplify right side
    580,543.20x = 382,135,827,098.88
  5. Step 5: Solve for x
    x = 382,135,827,098.88/580,543.20
  6. Step 6: Final answer
    x = 658,238.40

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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.