Home / 1,991,993,863.95-2,989,024,875.09-812,439,712.71

Finding the Fourth Proportional to 1,991,993,863.95, 2,989,024,875.09 and 812,439,712.71

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Solution

The fourth proportional to 1,991,993,863.95, 2,989,024,875.09 and 812,439,712.71 is: 1,219,081,320.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,993,863.95 : 2,989,024,875.09 = 812,439,712.71 : x
  2. Step 2: Convert to fraction form
    1,991,993,863.95/2,989,024,875.09 = 812,439,712.71/x
  3. Step 3: Cross multiply
    1,991,993,863.95x = 2,989,024,875.09 × 812,439,712.71
  4. Step 4: Simplify right side
    1,991,993,863.95x = 2,428,402,510,801,163,264
  5. Step 5: Solve for x
    x = 2,428,402,510,801,163,264/1,991,993,863.95
  6. Step 6: Final answer
    x = 1,219,081,320.86

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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.