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Finding the Fourth Proportional to 876,770.70, 1,315,287.45 and 371,330.70

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Solution

The fourth proportional to 876,770.70, 1,315,287.45 and 371,330.70 is: 557,051.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,770.70 : 1,315,287.45 = 371,330.70 : x
  2. Step 2: Convert to fraction form
    876,770.70/1,315,287.45 = 371,330.70/x
  3. Step 3: Cross multiply
    876,770.70x = 1,315,287.45 × 371,330.70
  4. Step 4: Simplify right side
    876,770.70x = 488,406,609,509.72
  5. Step 5: Solve for x
    x = 488,406,609,509.72/876,770.70
  6. Step 6: Final answer
    x = 557,051.70

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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.