Home / 687,679.80-1,029,551.40-608,947.80

Finding the Fourth Proportional to 687,679.80, 1,029,551.40 and 608,947.80

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Solution

The fourth proportional to 687,679.80, 1,029,551.40 and 608,947.80 is: 911,678.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,679.80 : 1,029,551.40 = 608,947.80 : x
  2. Step 2: Convert to fraction form
    687,679.80/1,029,551.40 = 608,947.80/x
  3. Step 3: Cross multiply
    687,679.80x = 1,029,551.40 × 608,947.80
  4. Step 4: Simplify right side
    687,679.80x = 626,943,060,016.92
  5. Step 5: Solve for x
    x = 626,943,060,016.92/687,679.80
  6. Step 6: Final answer
    x = 911,678.75

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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.