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Finding the Fourth Proportional to 579,095.79, 868,656.30 and 407,616.76

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Solution

The fourth proportional to 579,095.79, 868,656.30 and 407,616.76 is: 611,434.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,095.79 : 868,656.30 = 407,616.76 : x
  2. Step 2: Convert to fraction form
    579,095.79/868,656.30 = 407,616.76/x
  3. Step 3: Cross multiply
    579,095.79x = 868,656.30 × 407,616.76
  4. Step 4: Simplify right side
    579,095.79x = 354,078,866,559.59
  5. Step 5: Solve for x
    x = 354,078,866,559.59/579,095.79
  6. Step 6: Final answer
    x = 611,434.02

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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.