Home / 418,949.12-578,171.04-389,426.24

Finding the Fourth Proportional to 418,949.12, 578,171.04 and 389,426.24

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Solution

The fourth proportional to 418,949.12, 578,171.04 and 389,426.24 is: 537,427.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,949.12 : 578,171.04 = 389,426.24 : x
  2. Step 2: Convert to fraction form
    418,949.12/578,171.04 = 389,426.24/x
  3. Step 3: Cross multiply
    418,949.12x = 578,171.04 × 389,426.24
  4. Step 4: Simplify right side
    418,949.12x = 225,154,974,184.09
  5. Step 5: Solve for x
    x = 225,154,974,184.09/418,949.12
  6. Step 6: Final answer
    x = 537,427.97

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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.