Home / 879,445.20-1,320,042.60-430,672.80

Finding the Fourth Proportional to 879,445.20, 1,320,042.60 and 430,672.80

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Solution

The fourth proportional to 879,445.20, 1,320,042.60 and 430,672.80 is: 646,437.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,445.20 : 1,320,042.60 = 430,672.80 : x
  2. Step 2: Convert to fraction form
    879,445.20/1,320,042.60 = 430,672.80/x
  3. Step 3: Cross multiply
    879,445.20x = 1,320,042.60 × 430,672.80
  4. Step 4: Simplify right side
    879,445.20x = 568,506,442,661.28
  5. Step 5: Solve for x
    x = 568,506,442,661.28/879,445.20
  6. Step 6: Final answer
    x = 646,437.60

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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.