Home / 628,740.21-867,661.52-342,262.38

Finding the Fourth Proportional to 628,740.21, 867,661.52 and 342,262.38

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Solution

The fourth proportional to 628,740.21, 867,661.52 and 342,262.38 is: 472,322.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,740.21 : 867,661.52 = 342,262.38 : x
  2. Step 2: Convert to fraction form
    628,740.21/867,661.52 = 342,262.38/x
  3. Step 3: Cross multiply
    628,740.21x = 867,661.52 × 342,262.38
  4. Step 4: Simplify right side
    628,740.21x = 296,967,895,158.31
  5. Step 5: Solve for x
    x = 296,967,895,158.31/628,740.21
  6. Step 6: Final answer
    x = 472,322.10

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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.