Home / 928,698.06-1,281,618-520,890.60

Finding the Fourth Proportional to 928,698.06, 1,281,618 and 520,890.60

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Solution

The fourth proportional to 928,698.06, 1,281,618 and 520,890.60 is: 718,837.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,698.06 : 1,281,618 = 520,890.60 : x
  2. Step 2: Convert to fraction form
    928,698.06/1,281,618 = 520,890.60/x
  3. Step 3: Cross multiply
    928,698.06x = 1,281,618 × 520,890.60
  4. Step 4: Simplify right side
    928,698.06x = 667,582,768,990.80
  5. Step 5: Solve for x
    x = 667,582,768,990.80/928,698.06
  6. Step 6: Final answer
    x = 718,837.26

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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.