Home / 1,005,414.45-1,388,139.99-772,426.35

Finding the Fourth Proportional to 1,005,414.45, 1,388,139.99 and 772,426.35

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Solution

The fourth proportional to 1,005,414.45, 1,388,139.99 and 772,426.35 is: 1,066,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,005,414.45 : 1,388,139.99 = 772,426.35 : x
  2. Step 2: Convert to fraction form
    1,005,414.45/1,388,139.99 = 772,426.35/x
  3. Step 3: Cross multiply
    1,005,414.45x = 1,388,139.99 × 772,426.35
  4. Step 4: Simplify right side
    1,005,414.45x = 1,072,235,905,764.74
  5. Step 5: Solve for x
    x = 1,072,235,905,764.74/1,005,414.45
  6. Step 6: Final answer
    x = 1,066,461.60

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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.