Home / 1,315,722.50-1,815,681.94-771,753.63

Finding the Fourth Proportional to 1,315,722.50, 1,815,681.94 and 771,753.63

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Solution

The fourth proportional to 1,315,722.50, 1,815,681.94 and 771,753.63 is: 1,065,011.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,722.50 : 1,815,681.94 = 771,753.63 : x
  2. Step 2: Convert to fraction form
    1,315,722.50/1,815,681.94 = 771,753.63/x
  3. Step 3: Cross multiply
    1,315,722.50x = 1,815,681.94 × 771,753.63
  4. Step 4: Simplify right side
    1,315,722.50x = 1,401,259,128,120.44
  5. Step 5: Solve for x
    x = 1,401,259,128,120.44/1,315,722.50
  6. Step 6: Final answer
    x = 1,065,011.15

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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.