Home / 847,972.95-1,271,960.15-315,424.95

Finding the Fourth Proportional to 847,972.95, 1,271,960.15 and 315,424.95

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Solution

The fourth proportional to 847,972.95, 1,271,960.15 and 315,424.95 is: 473,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,972.95 : 1,271,960.15 = 315,424.95 : x
  2. Step 2: Convert to fraction form
    847,972.95/1,271,960.15 = 315,424.95/x
  3. Step 3: Cross multiply
    847,972.95x = 1,271,960.15 × 315,424.95
  4. Step 4: Simplify right side
    847,972.95x = 401,207,965,138.62
  5. Step 5: Solve for x
    x = 401,207,965,138.62/847,972.95
  6. Step 6: Final answer
    x = 473,137.69

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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.