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Finding the Fourth Proportional to 589,615.20, 884,422.80 and 400,658.40

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Solution

The fourth proportional to 589,615.20, 884,422.80 and 400,658.40 is: 600,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,615.20 : 884,422.80 = 400,658.40 : x
  2. Step 2: Convert to fraction form
    589,615.20/884,422.80 = 400,658.40/x
  3. Step 3: Cross multiply
    589,615.20x = 884,422.80 × 400,658.40
  4. Step 4: Simplify right side
    589,615.20x = 354,351,423,971.52
  5. Step 5: Solve for x
    x = 354,351,423,971.52/589,615.20
  6. Step 6: Final answer
    x = 600,987.60

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Similar ratio
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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.