Home / 780,401.25-1,170,064.04-307,140.93

Finding the Fourth Proportional to 780,401.25, 1,170,064.04 and 307,140.93

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Solution

The fourth proportional to 780,401.25, 1,170,064.04 and 307,140.93 is: 460,499.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,401.25 : 1,170,064.04 = 307,140.93 : x
  2. Step 2: Convert to fraction form
    780,401.25/1,170,064.04 = 307,140.93/x
  3. Step 3: Cross multiply
    780,401.25x = 1,170,064.04 × 307,140.93
  4. Step 4: Simplify right side
    780,401.25x = 359,374,555,869.45
  5. Step 5: Solve for x
    x = 359,374,555,869.45/780,401.25
  6. Step 6: Final answer
    x = 460,499.72

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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.