Home / 418,557.12-623,892.74-384,964.80

Finding the Fourth Proportional to 418,557.12, 623,892.74 and 384,964.80

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Solution

The fourth proportional to 418,557.12, 623,892.74 and 384,964.80 is: 573,820.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,557.12 : 623,892.74 = 384,964.80 : x
  2. Step 2: Convert to fraction form
    418,557.12/623,892.74 = 384,964.80/x
  3. Step 3: Cross multiply
    418,557.12x = 623,892.74 × 384,964.80
  4. Step 4: Simplify right side
    418,557.12x = 240,176,743,875.55
  5. Step 5: Solve for x
    x = 240,176,743,875.55/418,557.12
  6. Step 6: Final answer
    x = 573,820.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.