Home / 987,207.80-1,479,947.70-670,638.20

Finding the Fourth Proportional to 987,207.80, 1,479,947.70 and 670,638.20

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Solution

The fourth proportional to 987,207.80, 1,479,947.70 and 670,638.20 is: 1,005,370.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,207.80 : 1,479,947.70 = 670,638.20 : x
  2. Step 2: Convert to fraction form
    987,207.80/1,479,947.70 = 670,638.20/x
  3. Step 3: Cross multiply
    987,207.80x = 1,479,947.70 × 670,638.20
  4. Step 4: Simplify right side
    987,207.80x = 992,509,461,622.14
  5. Step 5: Solve for x
    x = 992,509,461,622.14/987,207.80
  6. Step 6: Final answer
    x = 1,005,370.36

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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.