Home / 1,115,138.61-1,538,861.36-656,280.23

Finding the Fourth Proportional to 1,115,138.61, 1,538,861.36 and 656,280.23

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Solution

The fourth proportional to 1,115,138.61, 1,538,861.36 and 656,280.23 is: 905,649.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,138.61 : 1,538,861.36 = 656,280.23 : x
  2. Step 2: Convert to fraction form
    1,115,138.61/1,538,861.36 = 656,280.23/x
  3. Step 3: Cross multiply
    1,115,138.61x = 1,538,861.36 × 656,280.23
  4. Step 4: Simplify right side
    1,115,138.61x = 1,009,924,276,303.20
  5. Step 5: Solve for x
    x = 1,009,924,276,303.20/1,115,138.61
  6. Step 6: Final answer
    x = 905,649.10

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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.