Home / 781,851.39-1,078,946.66-437,690.15

Finding the Fourth Proportional to 781,851.39, 1,078,946.66 and 437,690.15

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Solution

The fourth proportional to 781,851.39, 1,078,946.66 and 437,690.15 is: 604,007.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,851.39 : 1,078,946.66 = 437,690.15 : x
  2. Step 2: Convert to fraction form
    781,851.39/1,078,946.66 = 437,690.15/x
  3. Step 3: Cross multiply
    781,851.39x = 1,078,946.66 × 437,690.15
  4. Step 4: Simplify right side
    781,851.39x = 472,244,325,202.94
  5. Step 5: Solve for x
    x = 472,244,325,202.94/781,851.39
  6. Step 6: Final answer
    x = 604,007.79

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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.