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Finding the Fourth Proportional to 500,005.60, 689,990.72 and 273,646.24

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Solution

The fourth proportional to 500,005.60, 689,990.72 and 273,646.24 is: 377,622.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,005.60 : 689,990.72 = 273,646.24 : x
  2. Step 2: Convert to fraction form
    500,005.60/689,990.72 = 273,646.24/x
  3. Step 3: Cross multiply
    500,005.60x = 689,990.72 × 273,646.24
  4. Step 4: Simplify right side
    500,005.60x = 188,813,366,162.89
  5. Step 5: Solve for x
    x = 188,813,366,162.89/500,005.60
  6. Step 6: Final answer
    x = 377,622.50

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1.5x scale

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.