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Finding the Fourth Proportional to 858,798.40, 1,285,573.20 and 858,798.40

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Solution

The fourth proportional to 858,798.40, 1,285,573.20 and 858,798.40 is: 1,285,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,798.40 : 1,285,573.20 = 858,798.40 : x
  2. Step 2: Convert to fraction form
    858,798.40/1,285,573.20 = 858,798.40/x
  3. Step 3: Cross multiply
    858,798.40x = 1,285,573.20 × 858,798.40
  4. Step 4: Simplify right side
    858,798.40x = 1,104,048,207,242.88
  5. Step 5: Solve for x
    x = 1,104,048,207,242.88/858,798.40
  6. Step 6: Final answer
    x = 1,285,573.20

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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.