Home / 774,820.78-1,069,339.42-469,065.76

Finding the Fourth Proportional to 774,820.78, 1,069,339.42 and 469,065.76

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Solution

The fourth proportional to 774,820.78, 1,069,339.42 and 469,065.76 is: 647,363.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    774,820.78 : 1,069,339.42 = 469,065.76 : x
  2. Step 2: Convert to fraction form
    774,820.78/1,069,339.42 = 469,065.76/x
  3. Step 3: Cross multiply
    774,820.78x = 1,069,339.42 × 469,065.76
  4. Step 4: Simplify right side
    774,820.78x = 501,590,507,740.26
  5. Step 5: Solve for x
    x = 501,590,507,740.26/774,820.78
  6. Step 6: Final answer
    x = 647,363.26

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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.