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Finding the Fourth Proportional to 627,403.36, 865,746.36 and 355,413

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Solution

The fourth proportional to 627,403.36, 865,746.36 and 355,413 is: 490,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,403.36 : 865,746.36 = 355,413 : x
  2. Step 2: Convert to fraction form
    627,403.36/865,746.36 = 355,413/x
  3. Step 3: Cross multiply
    627,403.36x = 865,746.36 × 355,413
  4. Step 4: Simplify right side
    627,403.36x = 307,697,511,046.68
  5. Step 5: Solve for x
    x = 307,697,511,046.68/627,403.36
  6. Step 6: Final answer
    x = 490,430.13

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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.