Home / 1,578,979.52-2,178,990.12-853,825.40

Finding the Fourth Proportional to 1,578,979.52, 2,178,990.12 and 853,825.40

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Solution

The fourth proportional to 1,578,979.52, 2,178,990.12 and 853,825.40 is: 1,178,278.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,578,979.52 : 2,178,990.12 = 853,825.40 : x
  2. Step 2: Convert to fraction form
    1,578,979.52/2,178,990.12 = 853,825.40/x
  3. Step 3: Cross multiply
    1,578,979.52x = 2,178,990.12 × 853,825.40
  4. Step 4: Simplify right side
    1,578,979.52x = 1,860,477,110,805.05
  5. Step 5: Solve for x
    x = 1,860,477,110,805.05/1,578,979.52
  6. Step 6: Final answer
    x = 1,178,278.18

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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.