Home / 868,216.17-1,197,079.65-638,072.76

Finding the Fourth Proportional to 868,216.17, 1,197,079.65 and 638,072.76

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Solution

The fourth proportional to 868,216.17, 1,197,079.65 and 638,072.76 is: 879,762.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,216.17 : 1,197,079.65 = 638,072.76 : x
  2. Step 2: Convert to fraction form
    868,216.17/1,197,079.65 = 638,072.76/x
  3. Step 3: Cross multiply
    868,216.17x = 1,197,079.65 × 638,072.76
  4. Step 4: Simplify right side
    868,216.17x = 763,823,916,215.33
  5. Step 5: Solve for x
    x = 763,823,916,215.33/868,216.17
  6. Step 6: Final answer
    x = 879,762.37

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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.