Home / 987,349.80-1,480,160.70-670,780.20

Finding the Fourth Proportional to 987,349.80, 1,480,160.70 and 670,780.20

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Solution

The fourth proportional to 987,349.80, 1,480,160.70 and 670,780.20 is: 1,005,583.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,349.80 : 1,480,160.70 = 670,780.20 : x
  2. Step 2: Convert to fraction form
    987,349.80/1,480,160.70 = 670,780.20/x
  3. Step 3: Cross multiply
    987,349.80x = 1,480,160.70 × 670,780.20
  4. Step 4: Simplify right side
    987,349.80x = 992,862,490,378.14
  5. Step 5: Solve for x
    x = 992,862,490,378.14/987,349.80
  6. Step 6: Final answer
    x = 1,005,583.32

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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.