Home / 628,808.48-867,499.32-387,018.08

Finding the Fourth Proportional to 628,808.48, 867,499.32 and 387,018.08

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Solution

The fourth proportional to 628,808.48, 867,499.32 and 387,018.08 is: 533,927.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,808.48 : 867,499.32 = 387,018.08 : x
  2. Step 2: Convert to fraction form
    628,808.48/867,499.32 = 387,018.08/x
  3. Step 3: Cross multiply
    628,808.48x = 867,499.32 × 387,018.08
  4. Step 4: Simplify right side
    628,808.48x = 335,737,921,227.71
  5. Step 5: Solve for x
    x = 335,737,921,227.71/628,808.48
  6. Step 6: Final answer
    x = 533,927.15

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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.