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Finding the Fourth Proportional to 455,088.87, 627,667.38 and 291,760.65

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Solution

The fourth proportional to 455,088.87, 627,667.38 and 291,760.65 is: 402,401.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,088.87 : 627,667.38 = 291,760.65 : x
  2. Step 2: Convert to fraction form
    455,088.87/627,667.38 = 291,760.65/x
  3. Step 3: Cross multiply
    455,088.87x = 627,667.38 × 291,760.65
  4. Step 4: Simplify right side
    455,088.87x = 183,128,642,772.60
  5. Step 5: Solve for x
    x = 183,128,642,772.60/455,088.87
  6. Step 6: Final answer
    x = 402,401.94

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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.