Home / 513,619.16-708,813.80-281,061.72

Finding the Fourth Proportional to 513,619.16, 708,813.80 and 281,061.72

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Solution

The fourth proportional to 513,619.16, 708,813.80 and 281,061.72 is: 387,875.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,619.16 : 708,813.80 = 281,061.72 : x
  2. Step 2: Convert to fraction form
    513,619.16/708,813.80 = 281,061.72/x
  3. Step 3: Cross multiply
    513,619.16x = 708,813.80 × 281,061.72
  4. Step 4: Simplify right side
    513,619.16x = 199,220,425,787.74
  5. Step 5: Solve for x
    x = 199,220,425,787.74/513,619.16
  6. Step 6: Final answer
    x = 387,875.77

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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.