Home / 738,988.56-1,019,803.74-399,456.81

Finding the Fourth Proportional to 738,988.56, 1,019,803.74 and 399,456.81

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Solution

The fourth proportional to 738,988.56, 1,019,803.74 and 399,456.81 is: 551,250.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,988.56 : 1,019,803.74 = 399,456.81 : x
  2. Step 2: Convert to fraction form
    738,988.56/1,019,803.74 = 399,456.81/x
  3. Step 3: Cross multiply
    738,988.56x = 1,019,803.74 × 399,456.81
  4. Step 4: Simplify right side
    738,988.56x = 407,367,548,806.47
  5. Step 5: Solve for x
    x = 407,367,548,806.47/738,988.56
  6. Step 6: Final answer
    x = 551,250.14

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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.