Home / 687,044.64-948,088.26-381,133.20

Finding the Fourth Proportional to 687,044.64, 948,088.26 and 381,133.20

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Solution

The fourth proportional to 687,044.64, 948,088.26 and 381,133.20 is: 525,945.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,044.64 : 948,088.26 = 381,133.20 : x
  2. Step 2: Convert to fraction form
    687,044.64/948,088.26 = 381,133.20/x
  3. Step 3: Cross multiply
    687,044.64x = 948,088.26 × 381,133.20
  4. Step 4: Simplify right side
    687,044.64x = 361,347,912,416.23
  5. Step 5: Solve for x
    x = 361,347,912,416.23/687,044.64
  6. Step 6: Final answer
    x = 525,945.32

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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.