Home / 889,780.80-1,227,897.60-487,372.80

Finding the Fourth Proportional to 889,780.80, 1,227,897.60 and 487,372.80

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Solution

The fourth proportional to 889,780.80, 1,227,897.60 and 487,372.80 is: 672,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,780.80 : 1,227,897.60 = 487,372.80 : x
  2. Step 2: Convert to fraction form
    889,780.80/1,227,897.60 = 487,372.80/x
  3. Step 3: Cross multiply
    889,780.80x = 1,227,897.60 × 487,372.80
  4. Step 4: Simplify right side
    889,780.80x = 598,443,891,425.28
  5. Step 5: Solve for x
    x = 598,443,891,425.28/889,780.80
  6. Step 6: Final answer
    x = 672,574.52

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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.