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Finding the Fourth Proportional to 661,589,484.48, 912,976,801.20 and 364,228,758.81

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Solution

The fourth proportional to 661,589,484.48, 912,976,801.20 and 364,228,758.81 is: 502,626,500.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,589,484.48 : 912,976,801.20 = 364,228,758.81 : x
  2. Step 2: Convert to fraction form
    661,589,484.48/912,976,801.20 = 364,228,758.81/x
  3. Step 3: Cross multiply
    661,589,484.48x = 912,976,801.20 × 364,228,758.81
  4. Step 4: Simplify right side
    661,589,484.48x = 332,532,407,123,400,128
  5. Step 5: Solve for x
    x = 332,532,407,123,400,128/661,589,484.48
  6. Step 6: Final answer
    x = 502,626,500.15

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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.