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Finding the Fourth Proportional to 524,828.80, 786,076.80 and 431,516.80

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Solution

The fourth proportional to 524,828.80, 786,076.80 and 431,516.80 is: 646,316.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,828.80 : 786,076.80 = 431,516.80 : x
  2. Step 2: Convert to fraction form
    524,828.80/786,076.80 = 431,516.80/x
  3. Step 3: Cross multiply
    524,828.80x = 786,076.80 × 431,516.80
  4. Step 4: Simplify right side
    524,828.80x = 339,205,345,290.24
  5. Step 5: Solve for x
    x = 339,205,345,290.24/524,828.80
  6. Step 6: Final answer
    x = 646,316.18

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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.