Home / 821,909.23-1,134,231.05-459,332.78

Finding the Fourth Proportional to 821,909.23, 1,134,231.05 and 459,332.78

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Solution

The fourth proportional to 821,909.23, 1,134,231.05 and 459,332.78 is: 633,877.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,909.23 : 1,134,231.05 = 459,332.78 : x
  2. Step 2: Convert to fraction form
    821,909.23/1,134,231.05 = 459,332.78/x
  3. Step 3: Cross multiply
    821,909.23x = 1,134,231.05 × 459,332.78
  4. Step 4: Simplify right side
    821,909.23x = 520,989,496,836.00
  5. Step 5: Solve for x
    x = 520,989,496,836.00/821,909.23
  6. Step 6: Final answer
    x = 633,877.17

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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.