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Finding the Fourth Proportional to 553,999.40, 831,655.20 and 314,304.20

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Solution

The fourth proportional to 553,999.40, 831,655.20 and 314,304.20 is: 471,828.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,999.40 : 831,655.20 = 314,304.20 : x
  2. Step 2: Convert to fraction form
    553,999.40/831,655.20 = 314,304.20/x
  3. Step 3: Cross multiply
    553,999.40x = 831,655.20 × 314,304.20
  4. Step 4: Simplify right side
    553,999.40x = 261,392,722,311.84
  5. Step 5: Solve for x
    x = 261,392,722,311.84/553,999.40
  6. Step 6: Final answer
    x = 471,828.53

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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.