Home / 1,129,789-1,694,681.94-288,340.72

Finding the Fourth Proportional to 1,129,789, 1,694,681.94 and 288,340.72

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Solution

The fourth proportional to 1,129,789, 1,694,681.94 and 288,340.72 is: 432,510.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,789 : 1,694,681.94 = 288,340.72 : x
  2. Step 2: Convert to fraction form
    1,129,789/1,694,681.94 = 288,340.72/x
  3. Step 3: Cross multiply
    1,129,789x = 1,694,681.94 × 288,340.72
  4. Step 4: Simplify right side
    1,129,789x = 488,645,810,750.60
  5. Step 5: Solve for x
    x = 488,645,810,750.60/1,129,789
  6. Step 6: Final answer
    x = 432,510.68

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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.