Home / 763,384.19-1,145,469.95-314,436.83

Finding the Fourth Proportional to 763,384.19, 1,145,469.95 and 314,436.83

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Solution

The fourth proportional to 763,384.19, 1,145,469.95 and 314,436.83 is: 471,817.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,384.19 : 1,145,469.95 = 314,436.83 : x
  2. Step 2: Convert to fraction form
    763,384.19/1,145,469.95 = 314,436.83/x
  3. Step 3: Cross multiply
    763,384.19x = 1,145,469.95 × 314,436.83
  4. Step 4: Simplify right side
    763,384.19x = 360,177,938,366.07
  5. Step 5: Solve for x
    x = 360,177,938,366.07/763,384.19
  6. Step 6: Final answer
    x = 471,817.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.