Home / 780,605.90-1,170,111.29-442,933.23

Finding the Fourth Proportional to 780,605.90, 1,170,111.29 and 442,933.23

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Solution

The fourth proportional to 780,605.90, 1,170,111.29 and 442,933.23 is: 663,947.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,605.90 : 1,170,111.29 = 442,933.23 : x
  2. Step 2: Convert to fraction form
    780,605.90/1,170,111.29 = 442,933.23/x
  3. Step 3: Cross multiply
    780,605.90x = 1,170,111.29 × 442,933.23
  4. Step 4: Simplify right side
    780,605.90x = 518,281,170,924.50
  5. Step 5: Solve for x
    x = 518,281,170,924.50/780,605.90
  6. Step 6: Final answer
    x = 663,947.29

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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.