Home / 1,292,517.20-1,938,775.80-1,024,828.40

Finding the Fourth Proportional to 1,292,517.20, 1,938,775.80 and 1,024,828.40

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Solution

The fourth proportional to 1,292,517.20, 1,938,775.80 and 1,024,828.40 is: 1,537,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,517.20 : 1,938,775.80 = 1,024,828.40 : x
  2. Step 2: Convert to fraction form
    1,292,517.20/1,938,775.80 = 1,024,828.40/x
  3. Step 3: Cross multiply
    1,292,517.20x = 1,938,775.80 × 1,024,828.40
  4. Step 4: Simplify right side
    1,292,517.20x = 1,986,912,501,072.72
  5. Step 5: Solve for x
    x = 1,986,912,501,072.72/1,292,517.20
  6. Step 6: Final answer
    x = 1,537,242.60

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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.