Home / 467,420.40-645,172.28-276,500.16

Finding the Fourth Proportional to 467,420.40, 645,172.28 and 276,500.16

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Solution

The fourth proportional to 467,420.40, 645,172.28 and 276,500.16 is: 381,648.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,420.40 : 645,172.28 = 276,500.16 : x
  2. Step 2: Convert to fraction form
    467,420.40/645,172.28 = 276,500.16/x
  3. Step 3: Cross multiply
    467,420.40x = 645,172.28 × 276,500.16
  4. Step 4: Simplify right side
    467,420.40x = 178,390,238,647.57
  5. Step 5: Solve for x
    x = 178,390,238,647.57/467,420.40
  6. Step 6: Final answer
    x = 381,648.38

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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.