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Finding the Fourth Proportional to 641,952.92, 885,894.95 and 355,473

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Solution

The fourth proportional to 641,952.92, 885,894.95 and 355,473 is: 490,552.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,952.92 : 885,894.95 = 355,473 : x
  2. Step 2: Convert to fraction form
    641,952.92/885,894.95 = 355,473/x
  3. Step 3: Cross multiply
    641,952.92x = 885,894.95 × 355,473
  4. Step 4: Simplify right side
    641,952.92x = 314,911,733,783.99
  5. Step 5: Solve for x
    x = 314,911,733,783.99/641,952.92
  6. Step 6: Final answer
    x = 490,552.70

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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.