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Finding the Fourth Proportional to 524,870.76, 724,072.19 and 309,866.79

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Solution

The fourth proportional to 524,870.76, 724,072.19 and 309,866.79 is: 427,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,870.76 : 724,072.19 = 309,866.79 : x
  2. Step 2: Convert to fraction form
    524,870.76/724,072.19 = 309,866.79/x
  3. Step 3: Cross multiply
    524,870.76x = 724,072.19 × 309,866.79
  4. Step 4: Simplify right side
    524,870.76x = 224,365,923,694.24
  5. Step 5: Solve for x
    x = 224,365,923,694.24/524,870.76
  6. Step 6: Final answer
    x = 427,468.89

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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.