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Finding the Fourth Proportional to 524,320.40, 787,063.80 and 288,124.40

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Solution

The fourth proportional to 524,320.40, 787,063.80 and 288,124.40 is: 432,507.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,320.40 : 787,063.80 = 288,124.40 : x
  2. Step 2: Convert to fraction form
    524,320.40/787,063.80 = 288,124.40/x
  3. Step 3: Cross multiply
    524,320.40x = 787,063.80 × 288,124.40
  4. Step 4: Simplify right side
    524,320.40x = 226,772,285,136.72
  5. Step 5: Solve for x
    x = 226,772,285,136.72/524,320.40
  6. Step 6: Final answer
    x = 432,507.08

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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.