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Finding the Fourth Proportional to 569,677.20, 786,171.06 and 311,569.08

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Solution

The fourth proportional to 569,677.20, 786,171.06 and 311,569.08 is: 429,974.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    569,677.20 : 786,171.06 = 311,569.08 : x
  2. Step 2: Convert to fraction form
    569,677.20/786,171.06 = 311,569.08/x
  3. Step 3: Cross multiply
    569,677.20x = 786,171.06 × 311,569.08
  4. Step 4: Simplify right side
    569,677.20x = 244,946,593,886.83
  5. Step 5: Solve for x
    x = 244,946,593,886.83/569,677.20
  6. Step 6: Final answer
    x = 429,974.37

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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.