Home / 1,351,790.40-1,865,433.77-771,000.42

Finding the Fourth Proportional to 1,351,790.40, 1,865,433.77 and 771,000.42

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Solution

The fourth proportional to 1,351,790.40, 1,865,433.77 and 771,000.42 is: 1,063,959.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,790.40 : 1,865,433.77 = 771,000.42 : x
  2. Step 2: Convert to fraction form
    1,351,790.40/1,865,433.77 = 771,000.42/x
  3. Step 3: Cross multiply
    1,351,790.40x = 1,865,433.77 × 771,000.42
  4. Step 4: Simplify right side
    1,351,790.40x = 1,438,250,228,352.25
  5. Step 5: Solve for x
    x = 1,438,250,228,352.25/1,351,790.40
  6. Step 6: Final answer
    x = 1,063,959.50

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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.