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Finding the Fourth Proportional to 667,457.87, 1,000,020.40 and 555,856.07

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Solution

The fourth proportional to 667,457.87, 1,000,020.40 and 555,856.07 is: 832,812.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,457.87 : 1,000,020.40 = 555,856.07 : x
  2. Step 2: Convert to fraction form
    667,457.87/1,000,020.40 = 555,856.07/x
  3. Step 3: Cross multiply
    667,457.87x = 1,000,020.40 × 555,856.07
  4. Step 4: Simplify right side
    667,457.87x = 555,867,403,074.09
  5. Step 5: Solve for x
    x = 555,867,403,074.09/667,457.87
  6. Step 6: Final answer
    x = 832,812.72

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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.