Home / 1,278,885.60-1,918,328.40-1,224,280.80

Finding the Fourth Proportional to 1,278,885.60, 1,918,328.40 and 1,224,280.80

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Solution

The fourth proportional to 1,278,885.60, 1,918,328.40 and 1,224,280.80 is: 1,836,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,885.60 : 1,918,328.40 = 1,224,280.80 : x
  2. Step 2: Convert to fraction form
    1,278,885.60/1,918,328.40 = 1,224,280.80/x
  3. Step 3: Cross multiply
    1,278,885.60x = 1,918,328.40 × 1,224,280.80
  4. Step 4: Simplify right side
    1,278,885.60x = 2,348,572,628,214.72
  5. Step 5: Solve for x
    x = 2,348,572,628,214.72/1,278,885.60
  6. Step 6: Final answer
    x = 1,836,421.20

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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.