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Finding the Fourth Proportional to 524,992.40, 724,489.32 and 286,528.40

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Solution

The fourth proportional to 524,992.40, 724,489.32 and 286,528.40 is: 395,409.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,992.40 : 724,489.32 = 286,528.40 : x
  2. Step 2: Convert to fraction form
    524,992.40/724,489.32 = 286,528.40/x
  3. Step 3: Cross multiply
    524,992.40x = 724,489.32 × 286,528.40
  4. Step 4: Simplify right side
    524,992.40x = 207,586,765,676.69
  5. Step 5: Solve for x
    x = 207,586,765,676.69/524,992.40
  6. Step 6: Final answer
    x = 395,409.09

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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.