Home / 663,904.92-913,974.04-633,401.40

Finding the Fourth Proportional to 663,904.92, 913,974.04 and 633,401.40

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Solution

The fourth proportional to 663,904.92, 913,974.04 and 633,401.40 is: 871,980.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,904.92 : 913,974.04 = 633,401.40 : x
  2. Step 2: Convert to fraction form
    663,904.92/913,974.04 = 633,401.40/x
  3. Step 3: Cross multiply
    663,904.92x = 913,974.04 × 633,401.40
  4. Step 4: Simplify right side
    663,904.92x = 578,912,436,499.66
  5. Step 5: Solve for x
    x = 578,912,436,499.66/663,904.92
  6. Step 6: Final answer
    x = 871,980.94

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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.