Home / 627,009.46-865,329.48-355,143.48

Finding the Fourth Proportional to 627,009.46, 865,329.48 and 355,143.48

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Solution

The fourth proportional to 627,009.46, 865,329.48 and 355,143.48 is: 490,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,009.46 : 865,329.48 = 355,143.48 : x
  2. Step 2: Convert to fraction form
    627,009.46/865,329.48 = 355,143.48/x
  3. Step 3: Cross multiply
    627,009.46x = 865,329.48 × 355,143.48
  4. Step 4: Simplify right side
    627,009.46x = 307,316,122,873.79
  5. Step 5: Solve for x
    x = 307,316,122,873.79/627,009.46
  6. Step 6: Final answer
    x = 490,129.96

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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.