Home / 859,066.05-1,288,210.28-385,507.65

Finding the Fourth Proportional to 859,066.05, 1,288,210.28 and 385,507.65

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Solution

The fourth proportional to 859,066.05, 1,288,210.28 and 385,507.65 is: 578,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,066.05 : 1,288,210.28 = 385,507.65 : x
  2. Step 2: Convert to fraction form
    859,066.05/1,288,210.28 = 385,507.65/x
  3. Step 3: Cross multiply
    859,066.05x = 1,288,210.28 × 385,507.65
  4. Step 4: Simplify right side
    859,066.05x = 496,614,915,821.10
  5. Step 5: Solve for x
    x = 496,614,915,821.10/859,066.05
  6. Step 6: Final answer
    x = 578,087.00

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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.