Home / 818,208.96-1,128,857.76-478,436.64

Finding the Fourth Proportional to 818,208.96, 1,128,857.76 and 478,436.64

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Solution

The fourth proportional to 818,208.96, 1,128,857.76 and 478,436.64 is: 660,084.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,208.96 : 1,128,857.76 = 478,436.64 : x
  2. Step 2: Convert to fraction form
    818,208.96/1,128,857.76 = 478,436.64/x
  3. Step 3: Cross multiply
    818,208.96x = 1,128,857.76 × 478,436.64
  4. Step 4: Simplify right side
    818,208.96x = 540,086,913,732.33
  5. Step 5: Solve for x
    x = 540,086,913,732.33/818,208.96
  6. Step 6: Final answer
    x = 660,084.33

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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.