Home / 1,139,160.80-1,706,408.40-578,511.20

Finding the Fourth Proportional to 1,139,160.80, 1,706,408.40 and 578,511.20

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Solution

The fourth proportional to 1,139,160.80, 1,706,408.40 and 578,511.20 is: 866,582.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,160.80 : 1,706,408.40 = 578,511.20 : x
  2. Step 2: Convert to fraction form
    1,139,160.80/1,706,408.40 = 578,511.20/x
  3. Step 3: Cross multiply
    1,139,160.80x = 1,706,408.40 × 578,511.20
  4. Step 4: Simplify right side
    1,139,160.80x = 987,176,371,174.08
  5. Step 5: Solve for x
    x = 987,176,371,174.08/1,139,160.80
  6. Step 6: Final answer
    x = 866,582.11

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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.