Home / 1,212,421.60-1,673,241.42-668,663.74

Finding the Fourth Proportional to 1,212,421.60, 1,673,241.42 and 668,663.74

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Solution

The fourth proportional to 1,212,421.60, 1,673,241.42 and 668,663.74 is: 922,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,421.60 : 1,673,241.42 = 668,663.74 : x
  2. Step 2: Convert to fraction form
    1,212,421.60/1,673,241.42 = 668,663.74/x
  3. Step 3: Cross multiply
    1,212,421.60x = 1,673,241.42 × 668,663.74
  4. Step 4: Simplify right side
    1,212,421.60x = 1,118,835,865,820.11
  5. Step 5: Solve for x
    x = 1,118,835,865,820.11/1,212,421.60
  6. Step 6: Final answer
    x = 922,810.90

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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.