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Finding the Fourth Proportional to 579,871.20, 780,337.80 and 579,871.20

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Solution

The fourth proportional to 579,871.20, 780,337.80 and 579,871.20 is: 780,337.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,871.20 : 780,337.80 = 579,871.20 : x
  2. Step 2: Convert to fraction form
    579,871.20/780,337.80 = 579,871.20/x
  3. Step 3: Cross multiply
    579,871.20x = 780,337.80 × 579,871.20
  4. Step 4: Simplify right side
    579,871.20x = 452,495,416,491.36
  5. Step 5: Solve for x
    x = 452,495,416,491.36/579,871.20
  6. Step 6: Final answer
    x = 780,337.80

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.