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Finding the Fourth Proportional to 545,812.40, 817,843.80 and 345,774.80

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Solution

The fourth proportional to 545,812.40, 817,843.80 and 345,774.80 is: 518,108.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,812.40 : 817,843.80 = 345,774.80 : x
  2. Step 2: Convert to fraction form
    545,812.40/817,843.80 = 345,774.80/x
  3. Step 3: Cross multiply
    545,812.40x = 817,843.80 × 345,774.80
  4. Step 4: Simplify right side
    545,812.40x = 282,789,776,376.24
  5. Step 5: Solve for x
    x = 282,789,776,376.24/545,812.40
  6. Step 6: Final answer
    x = 518,108.01

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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.