Home / 753,591.20-1,133,011.20-638,117.60

Finding the Fourth Proportional to 753,591.20, 1,133,011.20 and 638,117.60

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Solution

The fourth proportional to 753,591.20, 1,133,011.20 and 638,117.60 is: 959,398.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    753,591.20 : 1,133,011.20 = 638,117.60 : x
  2. Step 2: Convert to fraction form
    753,591.20/1,133,011.20 = 638,117.60/x
  3. Step 3: Cross multiply
    753,591.20x = 1,133,011.20 × 638,117.60
  4. Step 4: Simplify right side
    753,591.20x = 722,994,387,717.12
  5. Step 5: Solve for x
    x = 722,994,387,717.12/753,591.20
  6. Step 6: Final answer
    x = 959,398.66

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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.