Home / 628,798.78-867,715.09-342,319.87

Finding the Fourth Proportional to 628,798.78, 867,715.09 and 342,319.87

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Solution

The fourth proportional to 628,798.78, 867,715.09 and 342,319.87 is: 472,386.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,798.78 : 867,715.09 = 342,319.87 : x
  2. Step 2: Convert to fraction form
    628,798.78/867,715.09 = 342,319.87/x
  3. Step 3: Cross multiply
    628,798.78x = 867,715.09 × 342,319.87
  4. Step 4: Simplify right side
    628,798.78x = 297,036,116,805.84
  5. Step 5: Solve for x
    x = 297,036,116,805.84/628,798.78
  6. Step 6: Final answer
    x = 472,386.60

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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.