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Finding the Fourth Proportional to 579,094.79, 868,654.80 and 407,615.76

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Solution

The fourth proportional to 579,094.79, 868,654.80 and 407,615.76 is: 611,432.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,094.79 : 868,654.80 = 407,615.76 : x
  2. Step 2: Convert to fraction form
    579,094.79/868,654.80 = 407,615.76/x
  3. Step 3: Cross multiply
    579,094.79x = 868,654.80 × 407,615.76
  4. Step 4: Simplify right side
    579,094.79x = 354,077,386,479.65
  5. Step 5: Solve for x
    x = 354,077,386,479.65/579,094.79
  6. Step 6: Final answer
    x = 611,432.52

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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.