Home / 738,985.46-1,019,799.48-399,453.71

Finding the Fourth Proportional to 738,985.46, 1,019,799.48 and 399,453.71

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Solution

The fourth proportional to 738,985.46, 1,019,799.48 and 399,453.71 is: 551,245.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,985.46 : 1,019,799.48 = 399,453.71 : x
  2. Step 2: Convert to fraction form
    738,985.46/1,019,799.48 = 399,453.71/x
  3. Step 3: Cross multiply
    738,985.46x = 1,019,799.48 × 399,453.71
  4. Step 4: Simplify right side
    738,985.46x = 407,362,680,643.07
  5. Step 5: Solve for x
    x = 407,362,680,643.07/738,985.46
  6. Step 6: Final answer
    x = 551,245.87

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Double scale
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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.