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Finding the Fourth Proportional to 876,407.84, 1,314,687.04 and 307,740.06

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Solution

The fourth proportional to 876,407.84, 1,314,687.04 and 307,740.06 is: 461,636.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,407.84 : 1,314,687.04 = 307,740.06 : x
  2. Step 2: Convert to fraction form
    876,407.84/1,314,687.04 = 307,740.06/x
  3. Step 3: Cross multiply
    876,407.84x = 1,314,687.04 × 307,740.06
  4. Step 4: Simplify right side
    876,407.84x = 404,581,868,570.82
  5. Step 5: Solve for x
    x = 404,581,868,570.82/876,407.84
  6. Step 6: Final answer
    x = 461,636.52

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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.