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Finding the Fourth Proportional to 524,357.40, 787,119.30 and 288,161.40

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Solution

The fourth proportional to 524,357.40, 787,119.30 and 288,161.40 is: 432,562.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,357.40 : 787,119.30 = 288,161.40 : x
  2. Step 2: Convert to fraction form
    524,357.40/787,119.30 = 288,161.40/x
  3. Step 3: Cross multiply
    524,357.40x = 787,119.30 × 288,161.40
  4. Step 4: Simplify right side
    524,357.40x = 226,817,399,455.02
  5. Step 5: Solve for x
    x = 226,817,399,455.02/524,357.40
  6. Step 6: Final answer
    x = 432,562.60

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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.