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Finding the Fourth Proportional to 722,069.59, 996,522.90 and 399,779.69

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Solution

The fourth proportional to 722,069.59, 996,522.90 and 399,779.69 is: 551,732.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,069.59 : 996,522.90 = 399,779.69 : x
  2. Step 2: Convert to fraction form
    722,069.59/996,522.90 = 399,779.69/x
  3. Step 3: Cross multiply
    722,069.59x = 996,522.90 × 399,779.69
  4. Step 4: Simplify right side
    722,069.59x = 398,389,609,058.39
  5. Step 5: Solve for x
    x = 398,389,609,058.39/722,069.59
  6. Step 6: Final answer
    x = 551,732.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.