Home / 921,187.31-1,381,780.98-359,828.15

Finding the Fourth Proportional to 921,187.31, 1,381,780.98 and 359,828.15

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Solution

The fourth proportional to 921,187.31, 1,381,780.98 and 359,828.15 is: 539,742.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,187.31 : 1,381,780.98 = 359,828.15 : x
  2. Step 2: Convert to fraction form
    921,187.31/1,381,780.98 = 359,828.15/x
  3. Step 3: Cross multiply
    921,187.31x = 1,381,780.98 × 359,828.15
  4. Step 4: Simplify right side
    921,187.31x = 497,203,686,829.68
  5. Step 5: Solve for x
    x = 497,203,686,829.68/921,187.31
  6. Step 6: Final answer
    x = 539,742.23

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1.5x scale

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.