Home / 1,223,515.75-1,689,065.22-764,885.20

Finding the Fourth Proportional to 1,223,515.75, 1,689,065.22 and 764,885.20

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Solution

The fourth proportional to 1,223,515.75, 1,689,065.22 and 764,885.20 is: 1,055,925.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223,515.75 : 1,689,065.22 = 764,885.20 : x
  2. Step 2: Convert to fraction form
    1,223,515.75/1,689,065.22 = 764,885.20/x
  3. Step 3: Cross multiply
    1,223,515.75x = 1,689,065.22 × 764,885.20
  4. Step 4: Simplify right side
    1,223,515.75x = 1,291,940,988,612.74
  5. Step 5: Solve for x
    x = 1,291,940,988,612.74/1,223,515.75
  6. Step 6: Final answer
    x = 1,055,925.10

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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.