Home / 643,803.15-888,558.29-371,822.16

Finding the Fourth Proportional to 643,803.15, 888,558.29 and 371,822.16

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Solution

The fourth proportional to 643,803.15, 888,558.29 and 371,822.16 is: 513,178.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,803.15 : 888,558.29 = 371,822.16 : x
  2. Step 2: Convert to fraction form
    643,803.15/888,558.29 = 371,822.16/x
  3. Step 3: Cross multiply
    643,803.15x = 888,558.29 × 371,822.16
  4. Step 4: Simplify right side
    643,803.15x = 330,385,659,160.47
  5. Step 5: Solve for x
    x = 330,385,659,160.47/643,803.15
  6. Step 6: Final answer
    x = 513,178.08

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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.