Home / 1,290,316.41-1,780,441.30-738,946.38

Finding the Fourth Proportional to 1,290,316.41, 1,780,441.30 and 738,946.38

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Solution

The fourth proportional to 1,290,316.41, 1,780,441.30 and 738,946.38 is: 1,019,634.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,316.41 : 1,780,441.30 = 738,946.38 : x
  2. Step 2: Convert to fraction form
    1,290,316.41/1,780,441.30 = 738,946.38/x
  3. Step 3: Cross multiply
    1,290,316.41x = 1,780,441.30 × 738,946.38
  4. Step 4: Simplify right side
    1,290,316.41x = 1,315,650,653,437.49
  5. Step 5: Solve for x
    x = 1,315,650,653,437.49/1,290,316.41
  6. Step 6: Final answer
    x = 1,019,634.13

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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.