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Finding the Fourth Proportional to 628,899.92, 867,897.44 and 342,435.68

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Solution

The fourth proportional to 628,899.92, 867,897.44 and 342,435.68 is: 472,569.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,899.92 : 867,897.44 = 342,435.68 : x
  2. Step 2: Convert to fraction form
    628,899.92/867,897.44 = 342,435.68/x
  3. Step 3: Cross multiply
    628,899.92x = 867,897.44 × 342,435.68
  4. Step 4: Simplify right side
    628,899.92x = 297,199,050,036.66
  5. Step 5: Solve for x
    x = 297,199,050,036.66/628,899.92
  6. Step 6: Final answer
    x = 472,569.71

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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.