Home / 876,675.60-1,315,531.80-639,421.20

Finding the Fourth Proportional to 876,675.60, 1,315,531.80 and 639,421.20

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Solution

The fourth proportional to 876,675.60, 1,315,531.80 and 639,421.20 is: 959,509.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,675.60 : 1,315,531.80 = 639,421.20 : x
  2. Step 2: Convert to fraction form
    876,675.60/1,315,531.80 = 639,421.20/x
  3. Step 3: Cross multiply
    876,675.60x = 1,315,531.80 × 639,421.20
  4. Step 4: Simplify right side
    876,675.60x = 841,178,922,194.16
  5. Step 5: Solve for x
    x = 841,178,922,194.16/876,675.60
  6. Step 6: Final answer
    x = 959,509.91

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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.