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Finding the Fourth Proportional to 478,668.05, 660,550.54 and 260,883.61

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Solution

The fourth proportional to 478,668.05, 660,550.54 and 260,883.61 is: 360,013.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,668.05 : 660,550.54 = 260,883.61 : x
  2. Step 2: Convert to fraction form
    478,668.05/660,550.54 = 260,883.61/x
  3. Step 3: Cross multiply
    478,668.05x = 660,550.54 × 260,883.61
  4. Step 4: Simplify right side
    478,668.05x = 172,326,807,159.06
  5. Step 5: Solve for x
    x = 172,326,807,159.06/478,668.05
  6. Step 6: Final answer
    x = 360,013.18

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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.