Home / 1,139,420.80-1,706,878.40-999,337.60

Finding the Fourth Proportional to 1,139,420.80, 1,706,878.40 and 999,337.60

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Solution

The fourth proportional to 1,139,420.80, 1,706,878.40 and 999,337.60 is: 1,497,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,420.80 : 1,706,878.40 = 999,337.60 : x
  2. Step 2: Convert to fraction form
    1,139,420.80/1,706,878.40 = 999,337.60/x
  3. Step 3: Cross multiply
    1,139,420.80x = 1,706,878.40 × 999,337.60
  4. Step 4: Simplify right side
    1,139,420.80x = 1,705,747,763,747.84
  5. Step 5: Solve for x
    x = 1,705,747,763,747.84/1,139,420.80
  6. Step 6: Final answer
    x = 1,497,030.56

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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.