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Finding the Fourth Proportional to 641,946.97, 885,875.99 and 355,460.90

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Solution

The fourth proportional to 641,946.97, 885,875.99 and 355,460.90 is: 490,530.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,946.97 : 885,875.99 = 355,460.90 : x
  2. Step 2: Convert to fraction form
    641,946.97/885,875.99 = 355,460.90/x
  3. Step 3: Cross multiply
    641,946.97x = 885,875.99 × 355,460.90
  4. Step 4: Simplify right side
    641,946.97x = 314,894,276,693.79
  5. Step 5: Solve for x
    x = 314,894,276,693.79/641,946.97
  6. Step 6: Final answer
    x = 490,530.05

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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.