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Finding the Fourth Proportional to 876,652.80, 1,314,979.20 and 841,223.40

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Solution

The fourth proportional to 876,652.80, 1,314,979.20 and 841,223.40 is: 1,261,835.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,652.80 : 1,314,979.20 = 841,223.40 : x
  2. Step 2: Convert to fraction form
    876,652.80/1,314,979.20 = 841,223.40/x
  3. Step 3: Cross multiply
    876,652.80x = 1,314,979.20 × 841,223.40
  4. Step 4: Simplify right side
    876,652.80x = 1,106,191,273,553.28
  5. Step 5: Solve for x
    x = 1,106,191,273,553.28/876,652.80
  6. Step 6: Final answer
    x = 1,261,835.10

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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.