Home / 876,646.13-1,314,179.70-315,285.89

Finding the Fourth Proportional to 876,646.13, 1,314,179.70 and 315,285.89

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Solution

The fourth proportional to 876,646.13, 1,314,179.70 and 315,285.89 is: 472,644.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,646.13 : 1,314,179.70 = 315,285.89 : x
  2. Step 2: Convert to fraction form
    876,646.13/1,314,179.70 = 315,285.89/x
  3. Step 3: Cross multiply
    876,646.13x = 1,314,179.70 × 315,285.89
  4. Step 4: Simplify right side
    876,646.13x = 414,342,316,334.43
  5. Step 5: Solve for x
    x = 414,342,316,334.43/876,646.13
  6. Step 6: Final answer
    x = 472,644.89

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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.