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Finding the Fourth Proportional to 462,086.40, 693,129.60 and 407,848.80

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Solution

The fourth proportional to 462,086.40, 693,129.60 and 407,848.80 is: 611,773.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,086.40 : 693,129.60 = 407,848.80 : x
  2. Step 2: Convert to fraction form
    462,086.40/693,129.60 = 407,848.80/x
  3. Step 3: Cross multiply
    462,086.40x = 693,129.60 × 407,848.80
  4. Step 4: Simplify right side
    462,086.40x = 282,692,075,604.48
  5. Step 5: Solve for x
    x = 282,692,075,604.48/462,086.40
  6. Step 6: Final answer
    x = 611,773.20

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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.