Home / 778,381.28-1,074,141.80-456,305.89

Finding the Fourth Proportional to 778,381.28, 1,074,141.80 and 456,305.89

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Solution

The fourth proportional to 778,381.28, 1,074,141.80 and 456,305.89 is: 629,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,381.28 : 1,074,141.80 = 456,305.89 : x
  2. Step 2: Convert to fraction form
    778,381.28/1,074,141.80 = 456,305.89/x
  3. Step 3: Cross multiply
    778,381.28x = 1,074,141.80 × 456,305.89
  4. Step 4: Simplify right side
    778,381.28x = 490,137,226,779.47
  5. Step 5: Solve for x
    x = 490,137,226,779.47/778,381.28
  6. Step 6: Final answer
    x = 629,687.84

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1.5x scale

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.