Home / 626,290.61-939,036.32-412,812.05

Finding the Fourth Proportional to 626,290.61, 939,036.32 and 412,812.05

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Solution

The fourth proportional to 626,290.61, 939,036.32 and 412,812.05 is: 618,954.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,290.61 : 939,036.32 = 412,812.05 : x
  2. Step 2: Convert to fraction form
    626,290.61/939,036.32 = 412,812.05/x
  3. Step 3: Cross multiply
    626,290.61x = 939,036.32 × 412,812.05
  4. Step 4: Simplify right side
    626,290.61x = 387,645,508,567.19
  5. Step 5: Solve for x
    x = 387,645,508,567.19/626,290.61
  6. Step 6: Final answer
    x = 618,954.68

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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.