Home / 708,681.40-1,063,151.70-287,999.80

Finding the Fourth Proportional to 708,681.40, 1,063,151.70 and 287,999.80

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Solution

The fourth proportional to 708,681.40, 1,063,151.70 and 287,999.80 is: 432,052.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,681.40 : 1,063,151.70 = 287,999.80 : x
  2. Step 2: Convert to fraction form
    708,681.40/1,063,151.70 = 287,999.80/x
  3. Step 3: Cross multiply
    708,681.40x = 1,063,151.70 × 287,999.80
  4. Step 4: Simplify right side
    708,681.40x = 306,187,476,969.66
  5. Step 5: Solve for x
    x = 306,187,476,969.66/708,681.40
  6. Step 6: Final answer
    x = 432,052.37

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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.