Home / 638,539.94-881,191.07-352,070.21

Finding the Fourth Proportional to 638,539.94, 881,191.07 and 352,070.21

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Solution

The fourth proportional to 638,539.94, 881,191.07 and 352,070.21 is: 485,860.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,539.94 : 881,191.07 = 352,070.21 : x
  2. Step 2: Convert to fraction form
    638,539.94/881,191.07 = 352,070.21/x
  3. Step 3: Cross multiply
    638,539.94x = 881,191.07 × 352,070.21
  4. Step 4: Simplify right side
    638,539.94x = 310,241,126,827.92
  5. Step 5: Solve for x
    x = 310,241,126,827.92/638,539.94
  6. Step 6: Final answer
    x = 485,860.17

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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.