Home / 782,457.84-1,079,805.52-438,290.78

Finding the Fourth Proportional to 782,457.84, 1,079,805.52 and 438,290.78

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Solution

The fourth proportional to 782,457.84, 1,079,805.52 and 438,290.78 is: 604,848.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,457.84 : 1,079,805.52 = 438,290.78 : x
  2. Step 2: Convert to fraction form
    782,457.84/1,079,805.52 = 438,290.78/x
  3. Step 3: Cross multiply
    782,457.84x = 1,079,805.52 × 438,290.78
  4. Step 4: Simplify right side
    782,457.84x = 473,268,803,609.11
  5. Step 5: Solve for x
    x = 473,268,803,609.11/782,457.84
  6. Step 6: Final answer
    x = 604,848.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.