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Finding the Fourth Proportional to 690,640.38, 953,230.74 and 464,154.66

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Solution

The fourth proportional to 690,640.38, 953,230.74 and 464,154.66 is: 640,632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,640.38 : 953,230.74 = 464,154.66 : x
  2. Step 2: Convert to fraction form
    690,640.38/953,230.74 = 464,154.66/x
  3. Step 3: Cross multiply
    690,640.38x = 953,230.74 × 464,154.66
  4. Step 4: Simplify right side
    690,640.38x = 442,446,490,026.25
  5. Step 5: Solve for x
    x = 442,446,490,026.25/690,640.38
  6. Step 6: Final answer
    x = 640,632.23

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Double scale
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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.