Home / 1,386,569,309.83-1,912,349,930.40-1,218,947,172.02

Finding the Fourth Proportional to 1,386,569,309.83, 1,912,349,930.40 and 1,218,947,172.02

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Solution

The fourth proportional to 1,386,569,309.83, 1,912,349,930.40 and 1,218,947,172.02 is: 1,681,166,259.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,386,569,309.83 : 1,912,349,930.40 = 1,218,947,172.02 : x
  2. Step 2: Convert to fraction form
    1,386,569,309.83/1,912,349,930.40 = 1,218,947,172.02/x
  3. Step 3: Cross multiply
    1,386,569,309.83x = 1,912,349,930.40 × 1,218,947,172.02
  4. Step 4: Simplify right side
    1,386,569,309.83x = 2,331,053,539,571,429,376
  5. Step 5: Solve for x
    x = 2,331,053,539,571,429,376/1,386,569,309.83
  6. Step 6: Final answer
    x = 1,681,166,259.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.