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Finding the Fourth Proportional to 691,400.26, 954,128.92 and 401,070.54

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Solution

The fourth proportional to 691,400.26, 954,128.92 and 401,070.54 is: 553,475.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,400.26 : 954,128.92 = 401,070.54 : x
  2. Step 2: Convert to fraction form
    691,400.26/954,128.92 = 401,070.54/x
  3. Step 3: Cross multiply
    691,400.26x = 954,128.92 × 401,070.54
  4. Step 4: Simplify right side
    691,400.26x = 382,672,999,134.36
  5. Step 5: Solve for x
    x = 382,672,999,134.36/691,400.26
  6. Step 6: Final answer
    x = 553,475.35

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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.