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Finding the Fourth Proportional to 478,590.98, 660,447.09 and 260,801.60

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Solution

The fourth proportional to 478,590.98, 660,447.09 and 260,801.60 is: 359,901.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,590.98 : 660,447.09 = 260,801.60 : x
  2. Step 2: Convert to fraction form
    478,590.98/660,447.09 = 260,801.60/x
  3. Step 3: Cross multiply
    478,590.98x = 660,447.09 × 260,801.60
  4. Step 4: Simplify right side
    478,590.98x = 172,245,654,485.11
  5. Step 5: Solve for x
    x = 172,245,654,485.11/478,590.98
  6. Step 6: Final answer
    x = 359,901.59

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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.