Home / 1,215,066,628.10-1,676,783,019.65-686,421,007.76

Finding the Fourth Proportional to 1,215,066,628.10, 1,676,783,019.65 and 686,421,007.76

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Solution

The fourth proportional to 1,215,066,628.10, 1,676,783,019.65 and 686,421,007.76 is: 947,255,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,066,628.10 : 1,676,783,019.65 = 686,421,007.76 : x
  2. Step 2: Convert to fraction form
    1,215,066,628.10/1,676,783,019.65 = 686,421,007.76/x
  3. Step 3: Cross multiply
    1,215,066,628.10x = 1,676,783,019.65 × 686,421,007.76
  4. Step 4: Simplify right side
    1,215,066,628.10x = 1,150,979,090,143,768,832
  5. Step 5: Solve for x
    x = 1,150,979,090,143,768,832/1,215,066,628.10
  6. Step 6: Final answer
    x = 947,255,947.55

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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.