Home / 1,261,371,894.20-1,892,057,841.30-831,036,303.80

Finding the Fourth Proportional to 1,261,371,894.20, 1,892,057,841.30 and 831,036,303.80

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Solution

The fourth proportional to 1,261,371,894.20, 1,892,057,841.30 and 831,036,303.80 is: 1,246,554,455.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,371,894.20 : 1,892,057,841.30 = 831,036,303.80 : x
  2. Step 2: Convert to fraction form
    1,261,371,894.20/1,892,057,841.30 = 831,036,303.80/x
  3. Step 3: Cross multiply
    1,261,371,894.20x = 1,892,057,841.30 × 831,036,303.80
  4. Step 4: Simplify right side
    1,261,371,894.20x = 1,572,368,755,009,758,976
  5. Step 5: Solve for x
    x = 1,572,368,755,009,758,976/1,261,371,894.20
  6. Step 6: Final answer
    x = 1,246,554,455.70

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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.