Home / 628,807.56-867,769.98-342,343.38

Finding the Fourth Proportional to 628,807.56, 867,769.98 and 342,343.38

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Solution

The fourth proportional to 628,807.56, 867,769.98 and 342,343.38 is: 472,442.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,807.56 : 867,769.98 = 342,343.38 : x
  2. Step 2: Convert to fraction form
    628,807.56/867,769.98 = 342,343.38/x
  3. Step 3: Cross multiply
    628,807.56x = 867,769.98 × 342,343.38
  4. Step 4: Simplify right side
    628,807.56x = 297,075,308,015.73
  5. Step 5: Solve for x
    x = 297,075,308,015.73/628,807.56
  6. Step 6: Final answer
    x = 472,442.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.