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Finding the Fourth Proportional to 608,655, 840,006.66 and 350,540.40

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Solution

The fourth proportional to 608,655, 840,006.66 and 350,540.40 is: 483,781.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,655 : 840,006.66 = 350,540.40 : x
  2. Step 2: Convert to fraction form
    608,655/840,006.66 = 350,540.40/x
  3. Step 3: Cross multiply
    608,655x = 840,006.66 × 350,540.40
  4. Step 4: Simplify right side
    608,655x = 294,456,270,599.06
  5. Step 5: Solve for x
    x = 294,456,270,599.06/608,655
  6. Step 6: Final answer
    x = 483,781.90

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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.