Home / 391,175,547.40-586,763,321.10-197,011,937.80

Finding the Fourth Proportional to 391,175,547.40, 586,763,321.10 and 197,011,937.80

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Solution

The fourth proportional to 391,175,547.40, 586,763,321.10 and 197,011,937.80 is: 295,517,906.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,175,547.40 : 586,763,321.10 = 197,011,937.80 : x
  2. Step 2: Convert to fraction form
    391,175,547.40/586,763,321.10 = 197,011,937.80/x
  3. Step 3: Cross multiply
    391,175,547.40x = 586,763,321.10 × 197,011,937.80
  4. Step 4: Simplify right side
    391,175,547.40x = 115,599,378,919,874,640
  5. Step 5: Solve for x
    x = 115,599,378,919,874,640/391,175,547.40
  6. Step 6: Final answer
    x = 295,517,906.70

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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.