Home / 808,740.60-1,213,110.90-387,799.80

Finding the Fourth Proportional to 808,740.60, 1,213,110.90 and 387,799.80

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Solution

The fourth proportional to 808,740.60, 1,213,110.90 and 387,799.80 is: 581,699.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,740.60 : 1,213,110.90 = 387,799.80 : x
  2. Step 2: Convert to fraction form
    808,740.60/1,213,110.90 = 387,799.80/x
  3. Step 3: Cross multiply
    808,740.60x = 1,213,110.90 × 387,799.80
  4. Step 4: Simplify right side
    808,740.60x = 470,444,164,397.82
  5. Step 5: Solve for x
    x = 470,444,164,397.82/808,740.60
  6. Step 6: Final answer
    x = 581,699.70

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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.