Home / 840,212.57-1,260,312.37-209,122.13

Finding the Fourth Proportional to 840,212.57, 1,260,312.37 and 209,122.13

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Solution

The fourth proportional to 840,212.57, 1,260,312.37 and 209,122.13 is: 313,681.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,212.57 : 1,260,312.37 = 209,122.13 : x
  2. Step 2: Convert to fraction form
    840,212.57/1,260,312.37 = 209,122.13/x
  3. Step 3: Cross multiply
    840,212.57x = 1,260,312.37 × 209,122.13
  4. Step 4: Simplify right side
    840,212.57x = 263,559,207,279.75
  5. Step 5: Solve for x
    x = 263,559,207,279.75/840,212.57
  6. Step 6: Final answer
    x = 313,681.58

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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.