Home / 738,678.29-1,019,376.63-399,146.54

Finding the Fourth Proportional to 738,678.29, 1,019,376.63 and 399,146.54

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Solution

The fourth proportional to 738,678.29, 1,019,376.63 and 399,146.54 is: 550,822.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,678.29 : 1,019,376.63 = 399,146.54 : x
  2. Step 2: Convert to fraction form
    738,678.29/1,019,376.63 = 399,146.54/x
  3. Step 3: Cross multiply
    738,678.29x = 1,019,376.63 × 399,146.54
  4. Step 4: Simplify right side
    738,678.29x = 406,880,649,724.48
  5. Step 5: Solve for x
    x = 406,880,649,724.48/738,678.29
  6. Step 6: Final answer
    x = 550,822.54

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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.