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Finding the Fourth Proportional to 448,959.30, 619,792.40 and 346,755.32

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Solution

The fourth proportional to 448,959.30, 619,792.40 and 346,755.32 is: 478,698.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,959.30 : 619,792.40 = 346,755.32 : x
  2. Step 2: Convert to fraction form
    448,959.30/619,792.40 = 346,755.32/x
  3. Step 3: Cross multiply
    448,959.30x = 619,792.40 × 346,755.32
  4. Step 4: Simplify right side
    448,959.30x = 214,916,311,995.57
  5. Step 5: Solve for x
    x = 214,916,311,995.57/448,959.30
  6. Step 6: Final answer
    x = 478,698.88

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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.