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Finding the Fourth Proportional to 887,655.60, 1,330,608.60 and 438,445.80

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Solution

The fourth proportional to 887,655.60, 1,330,608.60 and 438,445.80 is: 657,236.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,655.60 : 1,330,608.60 = 438,445.80 : x
  2. Step 2: Convert to fraction form
    887,655.60/1,330,608.60 = 438,445.80/x
  3. Step 3: Cross multiply
    887,655.60x = 1,330,608.60 × 438,445.80
  4. Step 4: Simplify right side
    887,655.60x = 583,399,752,113.88
  5. Step 5: Solve for x
    x = 583,399,752,113.88/887,655.60
  6. Step 6: Final answer
    x = 657,236.60

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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.