Home / 680,941.42-939,417.15-405,244.15

Finding the Fourth Proportional to 680,941.42, 939,417.15 and 405,244.15

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Solution

The fourth proportional to 680,941.42, 939,417.15 and 405,244.15 is: 559,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,941.42 : 939,417.15 = 405,244.15 : x
  2. Step 2: Convert to fraction form
    680,941.42/939,417.15 = 405,244.15/x
  3. Step 3: Cross multiply
    680,941.42x = 939,417.15 × 405,244.15
  4. Step 4: Simplify right side
    680,941.42x = 380,693,304,447.17
  5. Step 5: Solve for x
    x = 380,693,304,447.17/680,941.42
  6. Step 6: Final answer
    x = 559,069.10

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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.