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Finding the Fourth Proportional to 524,281.40, 787,005.30 and 288,085.40

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Solution

The fourth proportional to 524,281.40, 787,005.30 and 288,085.40 is: 432,448.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,281.40 : 787,005.30 = 288,085.40 : x
  2. Step 2: Convert to fraction form
    524,281.40/787,005.30 = 288,085.40/x
  3. Step 3: Cross multiply
    524,281.40x = 787,005.30 × 288,085.40
  4. Step 4: Simplify right side
    524,281.40x = 226,724,736,652.62
  5. Step 5: Solve for x
    x = 226,724,736,652.62/524,281.40
  6. Step 6: Final answer
    x = 432,448.56

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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.