Home / 928,938.12-1,281,985.32-521,169.12

Finding the Fourth Proportional to 928,938.12, 1,281,985.32 and 521,169.12

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Solution

The fourth proportional to 928,938.12, 1,281,985.32 and 521,169.12 is: 719,241.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    928,938.12 : 1,281,985.32 = 521,169.12 : x
  2. Step 2: Convert to fraction form
    928,938.12/1,281,985.32 = 521,169.12/x
  3. Step 3: Cross multiply
    928,938.12x = 1,281,985.32 × 521,169.12
  4. Step 4: Simplify right side
    928,938.12x = 668,131,161,077.32
  5. Step 5: Solve for x
    x = 668,131,161,077.32/928,938.12
  6. Step 6: Final answer
    x = 719,241.84

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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.