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Finding the Fourth Proportional to 643,561.07, 888,114.24 and 357,083.24

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Solution

The fourth proportional to 643,561.07, 888,114.24 and 357,083.24 is: 492,774.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,561.07 : 888,114.24 = 357,083.24 : x
  2. Step 2: Convert to fraction form
    643,561.07/888,114.24 = 357,083.24/x
  3. Step 3: Cross multiply
    643,561.07x = 888,114.24 × 357,083.24
  4. Step 4: Simplify right side
    643,561.07x = 317,130,705,868.77
  5. Step 5: Solve for x
    x = 317,130,705,868.77/643,561.07
  6. Step 6: Final answer
    x = 492,774.85

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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.