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Finding the Fourth Proportional to 620,663.60, 930,995.40 and 305,055.20

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Solution

The fourth proportional to 620,663.60, 930,995.40 and 305,055.20 is: 457,582.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,663.60 : 930,995.40 = 305,055.20 : x
  2. Step 2: Convert to fraction form
    620,663.60/930,995.40 = 305,055.20/x
  3. Step 3: Cross multiply
    620,663.60x = 930,995.40 × 305,055.20
  4. Step 4: Simplify right side
    620,663.60x = 284,004,987,946.08
  5. Step 5: Solve for x
    x = 284,004,987,946.08/620,663.60
  6. Step 6: Final answer
    x = 457,582.80

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Similar ratio
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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.