Home / 778,235.34-1,073,964.77-438,703.59

Finding the Fourth Proportional to 778,235.34, 1,073,964.77 and 438,703.59

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Solution

The fourth proportional to 778,235.34, 1,073,964.77 and 438,703.59 is: 605,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,235.34 : 1,073,964.77 = 438,703.59 : x
  2. Step 2: Convert to fraction form
    778,235.34/1,073,964.77 = 438,703.59/x
  3. Step 3: Cross multiply
    778,235.34x = 1,073,964.77 × 438,703.59
  4. Step 4: Simplify right side
    778,235.34x = 471,152,206,079.22
  5. Step 5: Solve for x
    x = 471,152,206,079.22/778,235.34
  6. Step 6: Final answer
    x = 605,410.96

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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.