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Finding the Fourth Proportional to 524,609.40, 786,330.90 and 288,121.80

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Solution

The fourth proportional to 524,609.40, 786,330.90 and 288,121.80 is: 431,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,609.40 : 786,330.90 = 288,121.80 : x
  2. Step 2: Convert to fraction form
    524,609.40/786,330.90 = 288,121.80/x
  3. Step 3: Cross multiply
    524,609.40x = 786,330.90 × 288,121.80
  4. Step 4: Simplify right side
    524,609.40x = 226,559,074,303.62
  5. Step 5: Solve for x
    x = 226,559,074,303.62/524,609.40
  6. Step 6: Final answer
    x = 431,862.40

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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.