Home / 1,292,461.60-1,938,778.80-439,520.80

Finding the Fourth Proportional to 1,292,461.60, 1,938,778.80 and 439,520.80

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Solution

The fourth proportional to 1,292,461.60, 1,938,778.80 and 439,520.80 is: 659,310.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,461.60 : 1,938,778.80 = 439,520.80 : x
  2. Step 2: Convert to fraction form
    1,292,461.60/1,938,778.80 = 439,520.80/x
  3. Step 3: Cross multiply
    1,292,461.60x = 1,938,778.80 × 439,520.80
  4. Step 4: Simplify right side
    1,292,461.60x = 852,133,609,199.04
  5. Step 5: Solve for x
    x = 852,133,609,199.04/1,292,461.60
  6. Step 6: Final answer
    x = 659,310.58

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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.