Home / 578,808.10-867,920.55-342,223.30

Finding the Fourth Proportional to 578,808.10, 867,920.55 and 342,223.30

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Solution

The fourth proportional to 578,808.10, 867,920.55 and 342,223.30 is: 513,162.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,808.10 : 867,920.55 = 342,223.30 : x
  2. Step 2: Convert to fraction form
    578,808.10/867,920.55 = 342,223.30/x
  3. Step 3: Cross multiply
    578,808.10x = 867,920.55 × 342,223.30
  4. Step 4: Simplify right side
    578,808.10x = 297,022,634,758.82
  5. Step 5: Solve for x
    x = 297,022,634,758.82/578,808.10
  6. Step 6: Final answer
    x = 513,162.54

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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.