Home / 811,897.20-1,139,144.40-811,897.20

Finding the Fourth Proportional to 811,897.20, 1,139,144.40 and 811,897.20

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Solution

The fourth proportional to 811,897.20, 1,139,144.40 and 811,897.20 is: 1,139,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,897.20 : 1,139,144.40 = 811,897.20 : x
  2. Step 2: Convert to fraction form
    811,897.20/1,139,144.40 = 811,897.20/x
  3. Step 3: Cross multiply
    811,897.20x = 1,139,144.40 × 811,897.20
  4. Step 4: Simplify right side
    811,897.20x = 924,868,148,755.68
  5. Step 5: Solve for x
    x = 924,868,148,755.68/811,897.20
  6. Step 6: Final answer
    x = 1,139,144.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.