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Finding the Fourth Proportional to 876,367.72, 1,209,388.26 and 473,959.72

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Solution

The fourth proportional to 876,367.72, 1,209,388.26 and 473,959.72 is: 654,064.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,367.72 : 1,209,388.26 = 473,959.72 : x
  2. Step 2: Convert to fraction form
    876,367.72/1,209,388.26 = 473,959.72/x
  3. Step 3: Cross multiply
    876,367.72x = 1,209,388.26 × 473,959.72
  4. Step 4: Simplify right side
    876,367.72x = 573,201,321,080.89
  5. Step 5: Solve for x
    x = 573,201,321,080.89/876,367.72
  6. Step 6: Final answer
    x = 654,064.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.