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Finding the Fourth Proportional to 522,527.61, 721,154.81 and 307,687.67

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Solution

The fourth proportional to 522,527.61, 721,154.81 and 307,687.67 is: 424,648.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,527.61 : 721,154.81 = 307,687.67 : x
  2. Step 2: Convert to fraction form
    522,527.61/721,154.81 = 307,687.67/x
  3. Step 3: Cross multiply
    522,527.61x = 721,154.81 × 307,687.67
  4. Step 4: Simplify right side
    522,527.61x = 221,890,443,198.19
  5. Step 5: Solve for x
    x = 221,890,443,198.19/522,527.61
  6. Step 6: Final answer
    x = 424,648.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.