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Finding the Fourth Proportional to 641,160.64, 884,802.32 and 354,700.09

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Solution

The fourth proportional to 641,160.64, 884,802.32 and 354,700.09 is: 489,486.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,160.64 : 884,802.32 = 354,700.09 : x
  2. Step 2: Convert to fraction form
    641,160.64/884,802.32 = 354,700.09/x
  3. Step 3: Cross multiply
    641,160.64x = 884,802.32 × 354,700.09
  4. Step 4: Simplify right side
    641,160.64x = 313,839,462,536.21
  5. Step 5: Solve for x
    x = 313,839,462,536.21/641,160.64
  6. Step 6: Final answer
    x = 489,486.48

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1.5x scale

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.