Home / 1,317,928,340.10-1,818,768,894.54-723,207,622.38

Finding the Fourth Proportional to 1,317,928,340.10, 1,818,768,894.54 and 723,207,622.38

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Solution

The fourth proportional to 1,317,928,340.10, 1,818,768,894.54 and 723,207,622.38 is: 998,041,765.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,317,928,340.10 : 1,818,768,894.54 = 723,207,622.38 : x
  2. Step 2: Convert to fraction form
    1,317,928,340.10/1,818,768,894.54 = 723,207,622.38/x
  3. Step 3: Cross multiply
    1,317,928,340.10x = 1,818,768,894.54 × 723,207,622.38
  4. Step 4: Simplify right side
    1,317,928,340.10x = 1,315,347,527,878,974,208
  5. Step 5: Solve for x
    x = 1,315,347,527,878,974,208/1,317,928,340.10
  6. Step 6: Final answer
    x = 998,041,765.90

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1.5x scale

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.