Home / 738,447.28-1,019,055.96-398,914.48

Finding the Fourth Proportional to 738,447.28, 1,019,055.96 and 398,914.48

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Solution

The fourth proportional to 738,447.28, 1,019,055.96 and 398,914.48 is: 550,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,447.28 : 1,019,055.96 = 398,914.48 : x
  2. Step 2: Convert to fraction form
    738,447.28/1,019,055.96 = 398,914.48/x
  3. Step 3: Cross multiply
    738,447.28x = 1,019,055.96 × 398,914.48
  4. Step 4: Simplify right side
    738,447.28x = 406,516,178,374.30
  5. Step 5: Solve for x
    x = 406,516,178,374.30/738,447.28
  6. Step 6: Final answer
    x = 550,501.29

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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.