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Finding the Fourth Proportional to 545,662.98, 816,985.44 and 278,848.98

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Solution

The fourth proportional to 545,662.98, 816,985.44 and 278,848.98 is: 417,502.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,662.98 : 816,985.44 = 278,848.98 : x
  2. Step 2: Convert to fraction form
    545,662.98/816,985.44 = 278,848.98/x
  3. Step 3: Cross multiply
    545,662.98x = 816,985.44 × 278,848.98
  4. Step 4: Simplify right side
    545,662.98x = 227,815,556,618.85
  5. Step 5: Solve for x
    x = 227,815,556,618.85/545,662.98
  6. Step 6: Final answer
    x = 417,502.31

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Double scale
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1.5x scale

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.