Home / 1,133,500.39-1,564,215.08-643,465.64

Finding the Fourth Proportional to 1,133,500.39, 1,564,215.08 and 643,465.64

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Solution

The fourth proportional to 1,133,500.39, 1,564,215.08 and 643,465.64 is: 887,973.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133,500.39 : 1,564,215.08 = 643,465.64 : x
  2. Step 2: Convert to fraction form
    1,133,500.39/1,564,215.08 = 643,465.64/x
  3. Step 3: Cross multiply
    1,133,500.39x = 1,564,215.08 × 643,465.64
  4. Step 4: Simplify right side
    1,133,500.39x = 1,006,518,656,752.43
  5. Step 5: Solve for x
    x = 1,006,518,656,752.43/1,133,500.39
  6. Step 6: Final answer
    x = 887,973.81

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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.