Home / 1,212,303,348.30-1,818,455,022.45-921,737,981.55

Finding the Fourth Proportional to 1,212,303,348.30, 1,818,455,022.45 and 921,737,981.55

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Solution

The fourth proportional to 1,212,303,348.30, 1,818,455,022.45 and 921,737,981.55 is: 1,382,606,972.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,303,348.30 : 1,818,455,022.45 = 921,737,981.55 : x
  2. Step 2: Convert to fraction form
    1,212,303,348.30/1,818,455,022.45 = 921,737,981.55/x
  3. Step 3: Cross multiply
    1,212,303,348.30x = 1,818,455,022.45 × 921,737,981.55
  4. Step 4: Simplify right side
    1,212,303,348.30x = 1,676,139,061,932,523,008
  5. Step 5: Solve for x
    x = 1,676,139,061,932,523,008/1,212,303,348.30
  6. Step 6: Final answer
    x = 1,382,606,972.33

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Double scale
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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.