Home / 780,763.05-1,077,681.51-454,152.42

Finding the Fourth Proportional to 780,763.05, 1,077,681.51 and 454,152.42

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Solution

The fourth proportional to 780,763.05, 1,077,681.51 and 454,152.42 is: 626,863.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,763.05 : 1,077,681.51 = 454,152.42 : x
  2. Step 2: Convert to fraction form
    780,763.05/1,077,681.51 = 454,152.42/x
  3. Step 3: Cross multiply
    780,763.05x = 1,077,681.51 × 454,152.42
  4. Step 4: Simplify right side
    780,763.05x = 489,431,665,755.75
  5. Step 5: Solve for x
    x = 489,431,665,755.75/780,763.05
  6. Step 6: Final answer
    x = 626,863.25

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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.