Home / 641,743.71-885,328.26-386,953.35

Finding the Fourth Proportional to 641,743.71, 885,328.26 and 386,953.35

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Solution

The fourth proportional to 641,743.71, 885,328.26 and 386,953.35 is: 533,827.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,743.71 : 885,328.26 = 386,953.35 : x
  2. Step 2: Convert to fraction form
    641,743.71/885,328.26 = 386,953.35/x
  3. Step 3: Cross multiply
    641,743.71x = 885,328.26 × 386,953.35
  4. Step 4: Simplify right side
    641,743.71x = 342,580,736,056.67
  5. Step 5: Solve for x
    x = 342,580,736,056.67/641,743.71
  6. Step 6: Final answer
    x = 533,827.96

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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.