Home / 781,137.51-1,077,918.84-436,913.79

Finding the Fourth Proportional to 781,137.51, 1,077,918.84 and 436,913.79

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Solution

The fourth proportional to 781,137.51, 1,077,918.84 and 436,913.79 is: 602,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,137.51 : 1,077,918.84 = 436,913.79 : x
  2. Step 2: Convert to fraction form
    781,137.51/1,077,918.84 = 436,913.79/x
  3. Step 3: Cross multiply
    781,137.51x = 1,077,918.84 × 436,913.79
  4. Step 4: Simplify right side
    781,137.51x = 470,957,605,696.80
  5. Step 5: Solve for x
    x = 470,957,605,696.80/781,137.51
  6. Step 6: Final answer
    x = 602,912.55

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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.