Home / 2,120,571,715.12-3,179,793,362.08-1,235,543,088.78

Finding the Fourth Proportional to 2,120,571,715.12, 3,179,793,362.08 and 1,235,543,088.78

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Solution

The fourth proportional to 2,120,571,715.12, 3,179,793,362.08 and 1,235,543,088.78 is: 1,852,694,574.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,571,715.12 : 3,179,793,362.08 = 1,235,543,088.78 : x
  2. Step 2: Convert to fraction form
    2,120,571,715.12/3,179,793,362.08 = 1,235,543,088.78/x
  3. Step 3: Cross multiply
    2,120,571,715.12x = 3,179,793,362.08 × 1,235,543,088.78
  4. Step 4: Simplify right side
    2,120,571,715.12x = 3,928,771,712,266,463,744
  5. Step 5: Solve for x
    x = 3,928,771,712,266,463,744/2,120,571,715.12
  6. Step 6: Final answer
    x = 1,852,694,574.89

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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.