Home / 690,716.19-952,935.51-418,587.78

Finding the Fourth Proportional to 690,716.19, 952,935.51 and 418,587.78

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Solution

The fourth proportional to 690,716.19, 952,935.51 and 418,587.78 is: 577,497.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,716.19 : 952,935.51 = 418,587.78 : x
  2. Step 2: Convert to fraction form
    690,716.19/952,935.51 = 418,587.78/x
  3. Step 3: Cross multiply
    690,716.19x = 952,935.51 × 418,587.78
  4. Step 4: Simplify right side
    690,716.19x = 398,887,159,614.07
  5. Step 5: Solve for x
    x = 398,887,159,614.07/690,716.19
  6. Step 6: Final answer
    x = 577,497.92

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1.5x scale

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.