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Finding the Fourth Proportional to 713,947.59, 985,241.95 and 387,259.81

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Solution

The fourth proportional to 713,947.59, 985,241.95 and 387,259.81 is: 534,415.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,947.59 : 985,241.95 = 387,259.81 : x
  2. Step 2: Convert to fraction form
    713,947.59/985,241.95 = 387,259.81/x
  3. Step 3: Cross multiply
    713,947.59x = 985,241.95 × 387,259.81
  4. Step 4: Simplify right side
    713,947.59x = 381,544,606,929.78
  5. Step 5: Solve for x
    x = 381,544,606,929.78/713,947.59
  6. Step 6: Final answer
    x = 534,415.43

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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.