Home / 1,287,398.34-1,931,278.01-388,738.17

Finding the Fourth Proportional to 1,287,398.34, 1,931,278.01 and 388,738.17

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Solution

The fourth proportional to 1,287,398.34, 1,931,278.01 and 388,738.17 is: 583,161.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,398.34 : 1,931,278.01 = 388,738.17 : x
  2. Step 2: Convert to fraction form
    1,287,398.34/1,931,278.01 = 388,738.17/x
  3. Step 3: Cross multiply
    1,287,398.34x = 1,931,278.01 × 388,738.17
  4. Step 4: Simplify right side
    1,287,398.34x = 750,761,477,424.95
  5. Step 5: Solve for x
    x = 750,761,477,424.95/1,287,398.34
  6. Step 6: Final answer
    x = 583,161.76

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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.