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Finding the Fourth Proportional to 748,812.40, 1,123,364.40 and 322,347.40

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Solution

The fourth proportional to 748,812.40, 1,123,364.40 and 322,347.40 is: 483,583.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,812.40 : 1,123,364.40 = 322,347.40 : x
  2. Step 2: Convert to fraction form
    748,812.40/1,123,364.40 = 322,347.40/x
  3. Step 3: Cross multiply
    748,812.40x = 1,123,364.40 × 322,347.40
  4. Step 4: Simplify right side
    748,812.40x = 362,113,593,592.56
  5. Step 5: Solve for x
    x = 362,113,593,592.56/748,812.40
  6. Step 6: Final answer
    x = 483,583.86

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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.