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Finding the Fourth Proportional to 579,426.60, 868,962.04 and 400,660.65

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Solution

The fourth proportional to 579,426.60, 868,962.04 and 400,660.65 is: 600,867.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,426.60 : 868,962.04 = 400,660.65 : x
  2. Step 2: Convert to fraction form
    579,426.60/868,962.04 = 400,660.65/x
  3. Step 3: Cross multiply
    579,426.60x = 868,962.04 × 400,660.65
  4. Step 4: Simplify right side
    579,426.60x = 348,158,894,770.07
  5. Step 5: Solve for x
    x = 348,158,894,770.07/579,426.60
  6. Step 6: Final answer
    x = 600,867.98

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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.