Home / 1,298,189.72-1,947,468.86-399,706.13

Finding the Fourth Proportional to 1,298,189.72, 1,947,468.86 and 399,706.13

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Solution

The fourth proportional to 1,298,189.72, 1,947,468.86 and 399,706.13 is: 599,615.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,189.72 : 1,947,468.86 = 399,706.13 : x
  2. Step 2: Convert to fraction form
    1,298,189.72/1,947,468.86 = 399,706.13/x
  3. Step 3: Cross multiply
    1,298,189.72x = 1,947,468.86 × 399,706.13
  4. Step 4: Simplify right side
    1,298,189.72x = 778,415,241,326.11
  5. Step 5: Solve for x
    x = 778,415,241,326.11/1,298,189.72
  6. Step 6: Final answer
    x = 599,615.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.