Home / 991,423.20-1,368,172.68-538,714.20

Finding the Fourth Proportional to 991,423.20, 1,368,172.68 and 538,714.20

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Solution

The fourth proportional to 991,423.20, 1,368,172.68 and 538,714.20 is: 743,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,423.20 : 1,368,172.68 = 538,714.20 : x
  2. Step 2: Convert to fraction form
    991,423.20/1,368,172.68 = 538,714.20/x
  3. Step 3: Cross multiply
    991,423.20x = 1,368,172.68 × 538,714.20
  4. Step 4: Simplify right side
    991,423.20x = 737,054,050,768.06
  5. Step 5: Solve for x
    x = 737,054,050,768.06/991,423.20
  6. Step 6: Final answer
    x = 743,430.30

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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.