Home / 550,128.76-759,177.18-308,411.39

Finding the Fourth Proportional to 550,128.76, 759,177.18 and 308,411.39

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Solution

The fourth proportional to 550,128.76, 759,177.18 and 308,411.39 is: 425,607.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,128.76 : 759,177.18 = 308,411.39 : x
  2. Step 2: Convert to fraction form
    550,128.76/759,177.18 = 308,411.39/x
  3. Step 3: Cross multiply
    550,128.76x = 759,177.18 × 308,411.39
  4. Step 4: Simplify right side
    550,128.76x = 234,138,886,767.47
  5. Step 5: Solve for x
    x = 234,138,886,767.47/550,128.76
  6. Step 6: Final answer
    x = 425,607.43

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Double scale
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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.