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Finding the Fourth Proportional to 524,729.40, 787,677.30 and 288,533.40

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Solution

The fourth proportional to 524,729.40, 787,677.30 and 288,533.40 is: 433,120.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,729.40 : 787,677.30 = 288,533.40 : x
  2. Step 2: Convert to fraction form
    524,729.40/787,677.30 = 288,533.40/x
  3. Step 3: Cross multiply
    524,729.40x = 787,677.30 × 288,533.40
  4. Step 4: Simplify right side
    524,729.40x = 227,271,209,471.82
  5. Step 5: Solve for x
    x = 227,271,209,471.82/524,729.40
  6. Step 6: Final answer
    x = 433,120.78

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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.