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Finding the Fourth Proportional to 641,141.90, 884,698.72 and 369,298.21

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Solution

The fourth proportional to 641,141.90, 884,698.72 and 369,298.21 is: 509,587.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,141.90 : 884,698.72 = 369,298.21 : x
  2. Step 2: Convert to fraction form
    641,141.90/884,698.72 = 369,298.21/x
  3. Step 3: Cross multiply
    641,141.90x = 884,698.72 × 369,298.21
  4. Step 4: Simplify right side
    641,141.90x = 326,717,653,685.29
  5. Step 5: Solve for x
    x = 326,717,653,685.29/641,141.90
  6. Step 6: Final answer
    x = 509,587.12

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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.