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Finding the Fourth Proportional to 766,875.60, 1,150,302.60 and 346,150.80

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Solution

The fourth proportional to 766,875.60, 1,150,302.60 and 346,150.80 is: 519,221.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,875.60 : 1,150,302.60 = 346,150.80 : x
  2. Step 2: Convert to fraction form
    766,875.60/1,150,302.60 = 346,150.80/x
  3. Step 3: Cross multiply
    766,875.60x = 1,150,302.60 × 346,150.80
  4. Step 4: Simplify right side
    766,875.60x = 398,178,165,232.08
  5. Step 5: Solve for x
    x = 398,178,165,232.08/766,875.60
  6. Step 6: Final answer
    x = 519,221.33

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.