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Finding the Fourth Proportional to 643,515.52, 888,051.52 and 357,034.92

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Solution

The fourth proportional to 643,515.52, 888,051.52 and 357,034.92 is: 492,708.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,515.52 : 888,051.52 = 357,034.92 : x
  2. Step 2: Convert to fraction form
    643,515.52/888,051.52 = 357,034.92/x
  3. Step 3: Cross multiply
    643,515.52x = 888,051.52 × 357,034.92
  4. Step 4: Simplify right side
    643,515.52x = 317,065,403,399.08
  5. Step 5: Solve for x
    x = 317,065,403,399.08/643,515.52
  6. Step 6: Final answer
    x = 492,708.25

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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.