Home / 2,118,971.40-3,178,457.10-521,513.70

Finding the Fourth Proportional to 2,118,971.40, 3,178,457.10 and 521,513.70

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Solution

The fourth proportional to 2,118,971.40, 3,178,457.10 and 521,513.70 is: 782,270.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118,971.40 : 3,178,457.10 = 521,513.70 : x
  2. Step 2: Convert to fraction form
    2,118,971.40/3,178,457.10 = 521,513.70/x
  3. Step 3: Cross multiply
    2,118,971.40x = 3,178,457.10 × 521,513.70
  4. Step 4: Simplify right side
    2,118,971.40x = 1,657,608,922,512.27
  5. Step 5: Solve for x
    x = 1,657,608,922,512.27/2,118,971.40
  6. Step 6: Final answer
    x = 782,270.55

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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.