Home / 626,142.57-939,366.71-199,678.40

Finding the Fourth Proportional to 626,142.57, 939,366.71 and 199,678.40

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Solution

The fourth proportional to 626,142.57, 939,366.71 and 199,678.40 is: 299,566.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,142.57 : 939,366.71 = 199,678.40 : x
  2. Step 2: Convert to fraction form
    626,142.57/939,366.71 = 199,678.40/x
  3. Step 3: Cross multiply
    626,142.57x = 939,366.71 × 199,678.40
  4. Step 4: Simplify right side
    626,142.57x = 187,571,235,970.84
  5. Step 5: Solve for x
    x = 187,571,235,970.84/626,142.57
  6. Step 6: Final answer
    x = 299,566.34

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Double scale
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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.