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Finding the Fourth Proportional to 887,548.39, 1,224,813.86 and 505,639.87

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Solution

The fourth proportional to 887,548.39, 1,224,813.86 and 505,639.87 is: 697,781.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,548.39 : 1,224,813.86 = 505,639.87 : x
  2. Step 2: Convert to fraction form
    887,548.39/1,224,813.86 = 505,639.87/x
  3. Step 3: Cross multiply
    887,548.39x = 1,224,813.86 × 505,639.87
  4. Step 4: Simplify right side
    887,548.39x = 619,314,717,250.51
  5. Step 5: Solve for x
    x = 619,314,717,250.51/887,548.39
  6. Step 6: Final answer
    x = 697,781.36

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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.