Home / 987,355,954.32-1,362,690,017.64-611,133,216.72

Finding the Fourth Proportional to 987,355,954.32, 1,362,690,017.64 and 611,133,216.72

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Solution

The fourth proportional to 987,355,954.32, 1,362,690,017.64 and 611,133,216.72 is: 843,449,751.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,355,954.32 : 1,362,690,017.64 = 611,133,216.72 : x
  2. Step 2: Convert to fraction form
    987,355,954.32/1,362,690,017.64 = 611,133,216.72/x
  3. Step 3: Cross multiply
    987,355,954.32x = 1,362,690,017.64 × 611,133,216.72
  4. Step 4: Simplify right side
    987,355,954.32x = 832,785,133,872,566,784
  5. Step 5: Solve for x
    x = 832,785,133,872,566,784/987,355,954.32
  6. Step 6: Final answer
    x = 843,449,751.05

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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.