Home / 1,118,819.60-1,678,229.40-320,148.80

Finding the Fourth Proportional to 1,118,819.60, 1,678,229.40 and 320,148.80

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Solution

The fourth proportional to 1,118,819.60, 1,678,229.40 and 320,148.80 is: 480,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,819.60 : 1,678,229.40 = 320,148.80 : x
  2. Step 2: Convert to fraction form
    1,118,819.60/1,678,229.40 = 320,148.80/x
  3. Step 3: Cross multiply
    1,118,819.60x = 1,678,229.40 × 320,148.80
  4. Step 4: Simplify right side
    1,118,819.60x = 537,283,128,534.72
  5. Step 5: Solve for x
    x = 537,283,128,534.72/1,118,819.60
  6. Step 6: Final answer
    x = 480,223.20

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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.