Home / 847,972.45-1,271,959.40-315,424.45

Finding the Fourth Proportional to 847,972.45, 1,271,959.40 and 315,424.45

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Solution

The fourth proportional to 847,972.45, 1,271,959.40 and 315,424.45 is: 473,136.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    847,972.45 : 1,271,959.40 = 315,424.45 : x
  2. Step 2: Convert to fraction form
    847,972.45/1,271,959.40 = 315,424.45/x
  3. Step 3: Cross multiply
    847,972.45x = 1,271,959.40 × 315,424.45
  4. Step 4: Simplify right side
    847,972.45x = 401,207,094,167.33
  5. Step 5: Solve for x
    x = 401,207,094,167.33/847,972.45
  6. Step 6: Final answer
    x = 473,136.94

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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.