Home / 687,891.17-1,027,204.64-561,781.77

Finding the Fourth Proportional to 687,891.17, 1,027,204.64 and 561,781.77

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Solution

The fourth proportional to 687,891.17, 1,027,204.64 and 561,781.77 is: 838,889.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,891.17 : 1,027,204.64 = 561,781.77 : x
  2. Step 2: Convert to fraction form
    687,891.17/1,027,204.64 = 561,781.77/x
  3. Step 3: Cross multiply
    687,891.17x = 1,027,204.64 × 561,781.77
  4. Step 4: Simplify right side
    687,891.17x = 577,064,834,150.49
  5. Step 5: Solve for x
    x = 577,064,834,150.49/687,891.17
  6. Step 6: Final answer
    x = 838,889.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.