Home / 816,981,430.40-1,224,728,128.20-299,287,037.60

Finding the Fourth Proportional to 816,981,430.40, 1,224,728,128.20 and 299,287,037.60

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Solution

The fourth proportional to 816,981,430.40, 1,224,728,128.20 and 299,287,037.60 is: 448,657,998.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,981,430.40 : 1,224,728,128.20 = 299,287,037.60 : x
  2. Step 2: Convert to fraction form
    816,981,430.40/1,224,728,128.20 = 299,287,037.60/x
  3. Step 3: Cross multiply
    816,981,430.40x = 1,224,728,128.20 × 299,287,037.60
  4. Step 4: Simplify right side
    816,981,430.40x = 366,545,253,354,371,072
  5. Step 5: Solve for x
    x = 366,545,253,354,371,072/816,981,430.40
  6. Step 6: Final answer
    x = 448,657,998.47

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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.