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Finding the Fourth Proportional to 911,529.32, 1,257,903.08 and 503,629.93

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Solution

The fourth proportional to 911,529.32, 1,257,903.08 and 503,629.93 is: 695,005.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,529.32 : 1,257,903.08 = 503,629.93 : x
  2. Step 2: Convert to fraction form
    911,529.32/1,257,903.08 = 503,629.93/x
  3. Step 3: Cross multiply
    911,529.32x = 1,257,903.08 × 503,629.93
  4. Step 4: Simplify right side
    911,529.32x = 633,517,633,837.67
  5. Step 5: Solve for x
    x = 633,517,633,837.67/911,529.32
  6. Step 6: Final answer
    x = 695,005.22

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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.