Home / 777,428.36-1,072,484.40-454,938.80

Finding the Fourth Proportional to 777,428.36, 1,072,484.40 and 454,938.80

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Solution

The fourth proportional to 777,428.36, 1,072,484.40 and 454,938.80 is: 627,600.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,428.36 : 1,072,484.40 = 454,938.80 : x
  2. Step 2: Convert to fraction form
    777,428.36/1,072,484.40 = 454,938.80/x
  3. Step 3: Cross multiply
    777,428.36x = 1,072,484.40 × 454,938.80
  4. Step 4: Simplify right side
    777,428.36x = 487,914,765,954.72
  5. Step 5: Solve for x
    x = 487,914,765,954.72/777,428.36
  6. Step 6: Final answer
    x = 627,600.94

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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.