Home / 1,275,912,005.20-1,913,868,007.80-695,436,715.60

Finding the Fourth Proportional to 1,275,912,005.20, 1,913,868,007.80 and 695,436,715.60

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Solution

The fourth proportional to 1,275,912,005.20, 1,913,868,007.80 and 695,436,715.60 is: 1,043,155,073.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275,912,005.20 : 1,913,868,007.80 = 695,436,715.60 : x
  2. Step 2: Convert to fraction form
    1,275,912,005.20/1,913,868,007.80 = 695,436,715.60/x
  3. Step 3: Cross multiply
    1,275,912,005.20x = 1,913,868,007.80 × 695,436,715.60
  4. Step 4: Simplify right side
    1,275,912,005.20x = 1,330,974,081,436,347,136
  5. Step 5: Solve for x
    x = 1,330,974,081,436,347,136/1,275,912,005.20
  6. Step 6: Final answer
    x = 1,043,155,073.40

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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.