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Finding the Fourth Proportional to 640,766.57, 884,248.16 and 350,379.07

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Solution

The fourth proportional to 640,766.57, 884,248.16 and 350,379.07 is: 483,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,766.57 : 884,248.16 = 350,379.07 : x
  2. Step 2: Convert to fraction form
    640,766.57/884,248.16 = 350,379.07/x
  3. Step 3: Cross multiply
    640,766.57x = 884,248.16 × 350,379.07
  4. Step 4: Simplify right side
    640,766.57x = 309,822,041,776.88
  5. Step 5: Solve for x
    x = 309,822,041,776.88/640,766.57
  6. Step 6: Final answer
    x = 483,517.80

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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.