Home / 1,991,464,055.10-2,987,196,082.65-842,457,411.90

Finding the Fourth Proportional to 1,991,464,055.10, 2,987,196,082.65 and 842,457,411.90

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Solution

The fourth proportional to 1,991,464,055.10, 2,987,196,082.65 and 842,457,411.90 is: 1,263,686,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,464,055.10 : 2,987,196,082.65 = 842,457,411.90 : x
  2. Step 2: Convert to fraction form
    1,991,464,055.10/2,987,196,082.65 = 842,457,411.90/x
  3. Step 3: Cross multiply
    1,991,464,055.10x = 2,987,196,082.65 × 842,457,411.90
  4. Step 4: Simplify right side
    1,991,464,055.10x = 2,516,585,480,627,137,536
  5. Step 5: Solve for x
    x = 2,516,585,480,627,137,536/1,991,464,055.10
  6. Step 6: Final answer
    x = 1,263,686,117.85

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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.