Home / 853,557.04-1,280,679.81-379,918.45

Finding the Fourth Proportional to 853,557.04, 1,280,679.81 and 379,918.45

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Solution

The fourth proportional to 853,557.04, 1,280,679.81 and 379,918.45 is: 570,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,557.04 : 1,280,679.81 = 379,918.45 : x
  2. Step 2: Convert to fraction form
    853,557.04/1,280,679.81 = 379,918.45/x
  3. Step 3: Cross multiply
    853,557.04x = 1,280,679.81 × 379,918.45
  4. Step 4: Simplify right side
    853,557.04x = 486,553,888,361.50
  5. Step 5: Solve for x
    x = 486,553,888,361.50/853,557.04
  6. Step 6: Final answer
    x = 570,030.90

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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.