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Finding the Fourth Proportional to 641,946.66, 885,875.54 and 355,460.60

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Solution

The fourth proportional to 641,946.66, 885,875.54 and 355,460.60 is: 490,529.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,946.66 : 885,875.54 = 355,460.60 : x
  2. Step 2: Convert to fraction form
    641,946.66/885,875.54 = 355,460.60/x
  3. Step 3: Cross multiply
    641,946.66x = 885,875.54 × 355,460.60
  4. Step 4: Simplify right side
    641,946.66x = 314,893,850,973.72
  5. Step 5: Solve for x
    x = 314,893,850,973.72/641,946.66
  6. Step 6: Final answer
    x = 490,529.62

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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.