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Finding the Fourth Proportional to 487,998.74, 673,424.41 and 284,045.29

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Solution

The fourth proportional to 487,998.74, 673,424.41 and 284,045.29 is: 391,974.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,998.74 : 673,424.41 = 284,045.29 : x
  2. Step 2: Convert to fraction form
    487,998.74/673,424.41 = 284,045.29/x
  3. Step 3: Cross multiply
    487,998.74x = 673,424.41 × 284,045.29
  4. Step 4: Simplify right side
    487,998.74x = 191,283,031,831.53
  5. Step 5: Solve for x
    x = 191,283,031,831.53/487,998.74
  6. Step 6: Final answer
    x = 391,974.44

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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.