Home / 813,849.50-1,220,774.26-315,213.50

Finding the Fourth Proportional to 813,849.50, 1,220,774.26 and 315,213.50

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Solution

The fourth proportional to 813,849.50, 1,220,774.26 and 315,213.50 is: 472,820.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,849.50 : 1,220,774.26 = 315,213.50 : x
  2. Step 2: Convert to fraction form
    813,849.50/1,220,774.26 = 315,213.50/x
  3. Step 3: Cross multiply
    813,849.50x = 1,220,774.26 × 315,213.50
  4. Step 4: Simplify right side
    813,849.50x = 384,804,527,204.51
  5. Step 5: Solve for x
    x = 384,804,527,204.51/813,849.50
  6. Step 6: Final answer
    x = 472,820.25

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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.