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Finding the Fourth Proportional to 786,834,033.66, 1,085,926,181.40 and 447,824,934.27

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Solution

The fourth proportional to 786,834,033.66, 1,085,926,181.40 and 447,824,934.27 is: 618,052,600.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,834,033.66 : 1,085,926,181.40 = 447,824,934.27 : x
  2. Step 2: Convert to fraction form
    786,834,033.66/1,085,926,181.40 = 447,824,934.27/x
  3. Step 3: Cross multiply
    786,834,033.66x = 1,085,926,181.40 × 447,824,934.27
  4. Step 4: Simplify right side
    786,834,033.66x = 486,304,820,807,527,104
  5. Step 5: Solve for x
    x = 486,304,820,807,527,104/786,834,033.66
  6. Step 6: Final answer
    x = 618,052,600.68

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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.