Home / 717,723.12-990,457.37-395,433.22

Finding the Fourth Proportional to 717,723.12, 990,457.37 and 395,433.22

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Solution

The fourth proportional to 717,723.12, 990,457.37 and 395,433.22 is: 545,697.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,723.12 : 990,457.37 = 395,433.22 : x
  2. Step 2: Convert to fraction form
    717,723.12/990,457.37 = 395,433.22/x
  3. Step 3: Cross multiply
    717,723.12x = 990,457.37 × 395,433.22
  4. Step 4: Simplify right side
    717,723.12x = 391,659,742,638.52
  5. Step 5: Solve for x
    x = 391,659,742,638.52/717,723.12
  6. Step 6: Final answer
    x = 545,697.54

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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.