Home / 513,740.40-708,933.24-287,342.16

Finding the Fourth Proportional to 513,740.40, 708,933.24 and 287,342.16

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Solution

The fourth proportional to 513,740.40, 708,933.24 and 287,342.16 is: 396,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,740.40 : 708,933.24 = 287,342.16 : x
  2. Step 2: Convert to fraction form
    513,740.40/708,933.24 = 287,342.16/x
  3. Step 3: Cross multiply
    513,740.40x = 708,933.24 × 287,342.16
  4. Step 4: Simplify right side
    513,740.40x = 203,706,408,477.40
  5. Step 5: Solve for x
    x = 203,706,408,477.40/513,740.40
  6. Step 6: Final answer
    x = 396,516.23

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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.