Home / 1,390,724.01-1,918,979.91-810,042.71

Finding the Fourth Proportional to 1,390,724.01, 1,918,979.91 and 810,042.71

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Solution

The fourth proportional to 1,390,724.01, 1,918,979.91 and 810,042.71 is: 1,117,731.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,724.01 : 1,918,979.91 = 810,042.71 : x
  2. Step 2: Convert to fraction form
    1,390,724.01/1,918,979.91 = 810,042.71/x
  3. Step 3: Cross multiply
    1,390,724.01x = 1,918,979.91 × 810,042.71
  4. Step 4: Simplify right side
    1,390,724.01x = 1,554,455,677,137.06
  5. Step 5: Solve for x
    x = 1,554,455,677,137.06/1,390,724.01
  6. Step 6: Final answer
    x = 1,117,731.24

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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.