Home / 1,223,418.93-1,688,788.95-815,371.86

Finding the Fourth Proportional to 1,223,418.93, 1,688,788.95 and 815,371.86

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Solution

The fourth proportional to 1,223,418.93, 1,688,788.95 and 815,371.86 is: 1,125,526.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,418.93 : 1,688,788.95 = 815,371.86 : x
  2. Step 2: Convert to fraction form
    1,223,418.93/1,688,788.95 = 815,371.86/x
  3. Step 3: Cross multiply
    1,223,418.93x = 1,688,788.95 × 815,371.86
  4. Step 4: Simplify right side
    1,223,418.93x = 1,376,990,987,308.95
  5. Step 5: Solve for x
    x = 1,376,990,987,308.95/1,223,418.93
  6. Step 6: Final answer
    x = 1,125,526.96

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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.