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Finding the Fourth Proportional to 869,891,434.20, 1,304,837,151.30 and 836,448,413.40

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Solution

The fourth proportional to 869,891,434.20, 1,304,837,151.30 and 836,448,413.40 is: 1,254,672,620.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,891,434.20 : 1,304,837,151.30 = 836,448,413.40 : x
  2. Step 2: Convert to fraction form
    869,891,434.20/1,304,837,151.30 = 836,448,413.40/x
  3. Step 3: Cross multiply
    869,891,434.20x = 1,304,837,151.30 × 836,448,413.40
  4. Step 4: Simplify right side
    869,891,434.20x = 1,091,428,964,950,260,736
  5. Step 5: Solve for x
    x = 1,091,428,964,950,260,736/869,891,434.20
  6. Step 6: Final answer
    x = 1,254,672,620.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.