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Finding the Fourth Proportional to 627,407.64, 865,752.27 and 355,417.28

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Solution

The fourth proportional to 627,407.64, 865,752.27 and 355,417.28 is: 490,436.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,407.64 : 865,752.27 = 355,417.28 : x
  2. Step 2: Convert to fraction form
    627,407.64/865,752.27 = 355,417.28/x
  3. Step 3: Cross multiply
    627,407.64x = 865,752.27 × 355,417.28
  4. Step 4: Simplify right side
    627,407.64x = 307,703,312,628.46
  5. Step 5: Solve for x
    x = 307,703,312,628.46/627,407.64
  6. Step 6: Final answer
    x = 490,436.03

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.