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Finding the Fourth Proportional to 873,530.60, 1,206,129.18 and 859,580.20

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Solution

The fourth proportional to 873,530.60, 1,206,129.18 and 859,580.20 is: 1,186,867.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,530.60 : 1,206,129.18 = 859,580.20 : x
  2. Step 2: Convert to fraction form
    873,530.60/1,206,129.18 = 859,580.20/x
  3. Step 3: Cross multiply
    873,530.60x = 1,206,129.18 × 859,580.20
  4. Step 4: Simplify right side
    873,530.60x = 1,036,764,761,770.24
  5. Step 5: Solve for x
    x = 1,036,764,761,770.24/873,530.60
  6. Step 6: Final answer
    x = 1,186,867.14

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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.