Home / 687,258.06-948,463.47-385,471.50

Finding the Fourth Proportional to 687,258.06, 948,463.47 and 385,471.50

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Solution

The fourth proportional to 687,258.06, 948,463.47 and 385,471.50 is: 531,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,258.06 : 948,463.47 = 385,471.50 : x
  2. Step 2: Convert to fraction form
    687,258.06/948,463.47 = 385,471.50/x
  3. Step 3: Cross multiply
    687,258.06x = 948,463.47 × 385,471.50
  4. Step 4: Simplify right side
    687,258.06x = 365,605,636,476.11
  5. Step 5: Solve for x
    x = 365,605,636,476.11/687,258.06
  6. Step 6: Final answer
    x = 531,977.23

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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.