Home / 808,534.10-1,211,780.55-409,285.10

Finding the Fourth Proportional to 808,534.10, 1,211,780.55 and 409,285.10

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Solution

The fourth proportional to 808,534.10, 1,211,780.55 and 409,285.10 is: 613,411.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,534.10 : 1,211,780.55 = 409,285.10 : x
  2. Step 2: Convert to fraction form
    808,534.10/1,211,780.55 = 409,285.10/x
  3. Step 3: Cross multiply
    808,534.10x = 1,211,780.55 × 409,285.10
  4. Step 4: Simplify right side
    808,534.10x = 495,963,723,584.81
  5. Step 5: Solve for x
    x = 495,963,723,584.81/808,534.10
  6. Step 6: Final answer
    x = 613,411.02

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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.