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Finding the Fourth Proportional to 657,899.72, 907,904.35 and 356,093.72

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Solution

The fourth proportional to 657,899.72, 907,904.35 and 356,093.72 is: 491,410.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,899.72 : 907,904.35 = 356,093.72 : x
  2. Step 2: Convert to fraction form
    657,899.72/907,904.35 = 356,093.72/x
  3. Step 3: Cross multiply
    657,899.72x = 907,904.35 × 356,093.72
  4. Step 4: Simplify right side
    657,899.72x = 323,299,034,702.89
  5. Step 5: Solve for x
    x = 323,299,034,702.89/657,899.72
  6. Step 6: Final answer
    x = 491,410.81

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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.