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Finding the Fourth Proportional to 690,275.70, 952,394.49 and 403,866.18

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Solution

The fourth proportional to 690,275.70, 952,394.49 and 403,866.18 is: 557,226.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,275.70 : 952,394.49 = 403,866.18 : x
  2. Step 2: Convert to fraction form
    690,275.70/952,394.49 = 403,866.18/x
  3. Step 3: Cross multiply
    690,275.70x = 952,394.49 × 403,866.18
  4. Step 4: Simplify right side
    690,275.70x = 384,639,924,529.35
  5. Step 5: Solve for x
    x = 384,639,924,529.35/690,275.70
  6. Step 6: Final answer
    x = 557,226.52

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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.