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Finding the Fourth Proportional to 556,603.60, 835,366.20 and 257,544.40

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Solution

The fourth proportional to 556,603.60, 835,366.20 and 257,544.40 is: 386,529.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,603.60 : 835,366.20 = 257,544.40 : x
  2. Step 2: Convert to fraction form
    556,603.60/835,366.20 = 257,544.40/x
  3. Step 3: Cross multiply
    556,603.60x = 835,366.20 × 257,544.40
  4. Step 4: Simplify right side
    556,603.60x = 215,143,886,759.28
  5. Step 5: Solve for x
    x = 215,143,886,759.28/556,603.60
  6. Step 6: Final answer
    x = 386,529.82

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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.