Home / 910,361.80-1,365,106.50-430,189.96

Finding the Fourth Proportional to 910,361.80, 1,365,106.50 and 430,189.96

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Solution

The fourth proportional to 910,361.80, 1,365,106.50 and 430,189.96 is: 645,078.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,361.80 : 1,365,106.50 = 430,189.96 : x
  2. Step 2: Convert to fraction form
    910,361.80/1,365,106.50 = 430,189.96/x
  3. Step 3: Cross multiply
    910,361.80x = 1,365,106.50 × 430,189.96
  4. Step 4: Simplify right side
    910,361.80x = 587,255,110,630.74
  5. Step 5: Solve for x
    x = 587,255,110,630.74/910,361.80
  6. Step 6: Final answer
    x = 645,078.81

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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.