Home / 1,087,840.29-1,630,978.85-511,138.38

Finding the Fourth Proportional to 1,087,840.29, 1,630,978.85 and 511,138.38

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Solution

The fourth proportional to 1,087,840.29, 1,630,978.85 and 511,138.38 is: 766,340.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,087,840.29 : 1,630,978.85 = 511,138.38 : x
  2. Step 2: Convert to fraction form
    1,087,840.29/1,630,978.85 = 511,138.38/x
  3. Step 3: Cross multiply
    1,087,840.29x = 1,630,978.85 × 511,138.38
  4. Step 4: Simplify right side
    1,087,840.29x = 833,655,894,597.28
  5. Step 5: Solve for x
    x = 833,655,894,597.28/1,087,840.29
  6. Step 6: Final answer
    x = 766,340.33

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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.