Home / 690,112.64-952,398.95-418,204.32

Finding the Fourth Proportional to 690,112.64, 952,398.95 and 418,204.32

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Solution

The fourth proportional to 690,112.64, 952,398.95 and 418,204.32 is: 577,148.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,112.64 : 952,398.95 = 418,204.32 : x
  2. Step 2: Convert to fraction form
    690,112.64/952,398.95 = 418,204.32/x
  3. Step 3: Cross multiply
    690,112.64x = 952,398.95 × 418,204.32
  4. Step 4: Simplify right side
    690,112.64x = 398,297,353,162.44
  5. Step 5: Solve for x
    x = 398,297,353,162.44/690,112.64
  6. Step 6: Final answer
    x = 577,148.33

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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.