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Finding the Fourth Proportional to 485,465.72, 670,180.42 and 376,328.95

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Solution

The fourth proportional to 485,465.72, 670,180.42 and 376,328.95 is: 519,518.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,465.72 : 670,180.42 = 376,328.95 : x
  2. Step 2: Convert to fraction form
    485,465.72/670,180.42 = 376,328.95/x
  3. Step 3: Cross multiply
    485,465.72x = 670,180.42 × 376,328.95
  4. Step 4: Simplify right side
    485,465.72x = 252,208,297,667.80
  5. Step 5: Solve for x
    x = 252,208,297,667.80/485,465.72
  6. Step 6: Final answer
    x = 519,518.24

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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.