Home / 1,128,697.20-1,557,540-619,359.12

Finding the Fourth Proportional to 1,128,697.20, 1,557,540 and 619,359.12

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Solution

The fourth proportional to 1,128,697.20, 1,557,540 and 619,359.12 is: 854,681.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,697.20 : 1,557,540 = 619,359.12 : x
  2. Step 2: Convert to fraction form
    1,128,697.20/1,557,540 = 619,359.12/x
  3. Step 3: Cross multiply
    1,128,697.20x = 1,557,540 × 619,359.12
  4. Step 4: Simplify right side
    1,128,697.20x = 964,676,603,764.80
  5. Step 5: Solve for x
    x = 964,676,603,764.80/1,128,697.20
  6. Step 6: Final answer
    x = 854,681.49

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Double scale
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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.