Home / 487,621.44-672,968.24-280,896.96

Finding the Fourth Proportional to 487,621.44, 672,968.24 and 280,896.96

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Solution

The fourth proportional to 487,621.44, 672,968.24 and 280,896.96 is: 387,666.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,621.44 : 672,968.24 = 280,896.96 : x
  2. Step 2: Convert to fraction form
    487,621.44/672,968.24 = 280,896.96/x
  3. Step 3: Cross multiply
    487,621.44x = 672,968.24 × 280,896.96
  4. Step 4: Simplify right side
    487,621.44x = 189,034,732,792.55
  5. Step 5: Solve for x
    x = 189,034,732,792.55/487,621.44
  6. Step 6: Final answer
    x = 387,666.98

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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.