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Finding the Fourth Proportional to 611,500.47, 843,876.54 and 356,802.45

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Solution

The fourth proportional to 611,500.47, 843,876.54 and 356,802.45 is: 492,390.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,500.47 : 843,876.54 = 356,802.45 : x
  2. Step 2: Convert to fraction form
    611,500.47/843,876.54 = 356,802.45/x
  3. Step 3: Cross multiply
    611,500.47x = 843,876.54 × 356,802.45
  4. Step 4: Simplify right side
    611,500.47x = 301,097,216,969.52
  5. Step 5: Solve for x
    x = 301,097,216,969.52/611,500.47
  6. Step 6: Final answer
    x = 492,390.82

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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.