Home / 987,360.60-1,479,920.88-453,778.80

Finding the Fourth Proportional to 987,360.60, 1,479,920.88 and 453,778.80

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Solution

The fourth proportional to 987,360.60, 1,479,920.88 and 453,778.80 is: 680,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,360.60 : 1,479,920.88 = 453,778.80 : x
  2. Step 2: Convert to fraction form
    987,360.60/1,479,920.88 = 453,778.80/x
  3. Step 3: Cross multiply
    987,360.60x = 1,479,920.88 × 453,778.80
  4. Step 4: Simplify right side
    987,360.60x = 671,556,721,021.34
  5. Step 5: Solve for x
    x = 671,556,721,021.34/987,360.60
  6. Step 6: Final answer
    x = 680,153.45

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1.5x scale

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.