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Finding the Fourth Proportional to 553,710.20, 830,046.90 and 433,700.60

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Solution

The fourth proportional to 553,710.20, 830,046.90 and 433,700.60 is: 650,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,710.20 : 830,046.90 = 433,700.60 : x
  2. Step 2: Convert to fraction form
    553,710.20/830,046.90 = 433,700.60/x
  3. Step 3: Cross multiply
    553,710.20x = 830,046.90 × 433,700.60
  4. Step 4: Simplify right side
    553,710.20x = 359,991,838,558.14
  5. Step 5: Solve for x
    x = 359,991,838,558.14/553,710.20
  6. Step 6: Final answer
    x = 650,144.86

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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.