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Finding the Fourth Proportional to 579,346.80, 869,711.40 and 326,828.40

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Solution

The fourth proportional to 579,346.80, 869,711.40 and 326,828.40 is: 490,632.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,346.80 : 869,711.40 = 326,828.40 : x
  2. Step 2: Convert to fraction form
    579,346.80/869,711.40 = 326,828.40/x
  3. Step 3: Cross multiply
    579,346.80x = 869,711.40 × 326,828.40
  4. Step 4: Simplify right side
    579,346.80x = 284,246,385,323.76
  5. Step 5: Solve for x
    x = 284,246,385,323.76/579,346.80
  6. Step 6: Final answer
    x = 490,632.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.