Home / 578,748.10-867,830.55-342,163.30

Finding the Fourth Proportional to 578,748.10, 867,830.55 and 342,163.30

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Solution

The fourth proportional to 578,748.10, 867,830.55 and 342,163.30 is: 513,072.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,748.10 : 867,830.55 = 342,163.30 : x
  2. Step 2: Convert to fraction form
    578,748.10/867,830.55 = 342,163.30/x
  3. Step 3: Cross multiply
    578,748.10x = 867,830.55 × 342,163.30
  4. Step 4: Simplify right side
    578,748.10x = 296,939,764,828.82
  5. Step 5: Solve for x
    x = 296,939,764,828.82/578,748.10
  6. Step 6: Final answer
    x = 513,072.55

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Double scale
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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.