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Finding the Fourth Proportional to 524,612.40, 786,335.40 and 288,124.80

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Solution

The fourth proportional to 524,612.40, 786,335.40 and 288,124.80 is: 431,866.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,612.40 : 786,335.40 = 288,124.80 : x
  2. Step 2: Convert to fraction form
    524,612.40/786,335.40 = 288,124.80/x
  3. Step 3: Cross multiply
    524,612.40x = 786,335.40 × 288,124.80
  4. Step 4: Simplify right side
    524,612.40x = 226,562,729,857.92
  5. Step 5: Solve for x
    x = 226,562,729,857.92/524,612.40
  6. Step 6: Final answer
    x = 431,866.90

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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.