Home / 419,662,531.40-629,541,036.30-128,527,341.80

Finding the Fourth Proportional to 419,662,531.40, 629,541,036.30 and 128,527,341.80

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Solution

The fourth proportional to 419,662,531.40, 629,541,036.30 and 128,527,341.80 is: 192,805,480.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,662,531.40 : 629,541,036.30 = 128,527,341.80 : x
  2. Step 2: Convert to fraction form
    419,662,531.40/629,541,036.30 = 128,527,341.80/x
  3. Step 3: Cross multiply
    419,662,531.40x = 629,541,036.30 × 128,527,341.80
  4. Step 4: Simplify right side
    419,662,531.40x = 80,913,235,949,656,304
  5. Step 5: Solve for x
    x = 80,913,235,949,656,304/419,662,531.40
  6. Step 6: Final answer
    x = 192,805,480.35

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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.