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Finding the Fourth Proportional to 911,636.96, 1,258,032.52 and 503,732.32

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Solution

The fourth proportional to 911,636.96, 1,258,032.52 and 503,732.32 is: 695,135.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,636.96 : 1,258,032.52 = 503,732.32 : x
  2. Step 2: Convert to fraction form
    911,636.96/1,258,032.52 = 503,732.32/x
  3. Step 3: Cross multiply
    911,636.96x = 1,258,032.52 × 503,732.32
  4. Step 4: Simplify right side
    911,636.96x = 633,711,639,935.05
  5. Step 5: Solve for x
    x = 633,711,639,935.05/911,636.96
  6. Step 6: Final answer
    x = 695,135.97

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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.