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Finding the Fourth Proportional to 876,635.80, 1,314,953.70 and 841,206.40

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Solution

The fourth proportional to 876,635.80, 1,314,953.70 and 841,206.40 is: 1,261,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,635.80 : 1,314,953.70 = 841,206.40 : x
  2. Step 2: Convert to fraction form
    876,635.80/1,314,953.70 = 841,206.40/x
  3. Step 3: Cross multiply
    876,635.80x = 1,314,953.70 × 841,206.40
  4. Step 4: Simplify right side
    876,635.80x = 1,106,147,468,143.68
  5. Step 5: Solve for x
    x = 1,106,147,468,143.68/876,635.80
  6. Step 6: Final answer
    x = 1,261,809.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.