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Finding the Fourth Proportional to 620,616, 930,854.30 and 171,400.74

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Solution

The fourth proportional to 620,616, 930,854.30 and 171,400.74 is: 257,081.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,616 : 930,854.30 = 171,400.74 : x
  2. Step 2: Convert to fraction form
    620,616/930,854.30 = 171,400.74/x
  3. Step 3: Cross multiply
    620,616x = 930,854.30 × 171,400.74
  4. Step 4: Simplify right side
    620,616x = 159,549,115,852.18
  5. Step 5: Solve for x
    x = 159,549,115,852.18/620,616
  6. Step 6: Final answer
    x = 257,081.86

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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.