Home / 1,292,442.72-1,938,690-345,811.92

Finding the Fourth Proportional to 1,292,442.72, 1,938,690 and 345,811.92

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Solution

The fourth proportional to 1,292,442.72, 1,938,690 and 345,811.92 is: 518,724.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,442.72 : 1,938,690 = 345,811.92 : x
  2. Step 2: Convert to fraction form
    1,292,442.72/1,938,690 = 345,811.92/x
  3. Step 3: Cross multiply
    1,292,442.72x = 1,938,690 × 345,811.92
  4. Step 4: Simplify right side
    1,292,442.72x = 670,422,111,184.80
  5. Step 5: Solve for x
    x = 670,422,111,184.80/1,292,442.72
  6. Step 6: Final answer
    x = 518,724.82

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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.