Home / 1,292,440.72-1,938,687-345,809.92

Finding the Fourth Proportional to 1,292,440.72, 1,938,687 and 345,809.92

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Solution

The fourth proportional to 1,292,440.72, 1,938,687 and 345,809.92 is: 518,721.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,440.72 : 1,938,687 = 345,809.92 : x
  2. Step 2: Convert to fraction form
    1,292,440.72/1,938,687 = 345,809.92/x
  3. Step 3: Cross multiply
    1,292,440.72x = 1,938,687 × 345,809.92
  4. Step 4: Simplify right side
    1,292,440.72x = 670,417,196,375.04
  5. Step 5: Solve for x
    x = 670,417,196,375.04/1,292,440.72
  6. Step 6: Final answer
    x = 518,721.82

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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.