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Finding the Fourth Proportional to 903,605.42, 1,246,991.90 and 495,728.10

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Solution

The fourth proportional to 903,605.42, 1,246,991.90 and 495,728.10 is: 684,113.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,605.42 : 1,246,991.90 = 495,728.10 : x
  2. Step 2: Convert to fraction form
    903,605.42/1,246,991.90 = 495,728.10/x
  3. Step 3: Cross multiply
    903,605.42x = 1,246,991.90 × 495,728.10
  4. Step 4: Simplify right side
    903,605.42x = 618,168,922,823.75
  5. Step 5: Solve for x
    x = 618,168,922,823.75/903,605.42
  6. Step 6: Final answer
    x = 684,113.78

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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.