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Finding the Fourth Proportional to 690,363.81, 952,473.74 and 403,680.92

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Solution

The fourth proportional to 690,363.81, 952,473.74 and 403,680.92 is: 556,946.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,363.81 : 952,473.74 = 403,680.92 : x
  2. Step 2: Convert to fraction form
    690,363.81/952,473.74 = 403,680.92/x
  3. Step 3: Cross multiply
    690,363.81x = 952,473.74 × 403,680.92
  4. Step 4: Simplify right side
    690,363.81x = 384,495,468,858.27
  5. Step 5: Solve for x
    x = 384,495,468,858.27/690,363.81
  6. Step 6: Final answer
    x = 556,946.15

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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.