Home / 1,389,487.92-1,916,884.56-816,269.52

Finding the Fourth Proportional to 1,389,487.92, 1,916,884.56 and 816,269.52

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Solution

The fourth proportional to 1,389,487.92, 1,916,884.56 and 816,269.52 is: 1,126,094.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,487.92 : 1,916,884.56 = 816,269.52 : x
  2. Step 2: Convert to fraction form
    1,389,487.92/1,916,884.56 = 816,269.52/x
  3. Step 3: Cross multiply
    1,389,487.92x = 1,916,884.56 × 816,269.52
  4. Step 4: Simplify right side
    1,389,487.92x = 1,564,694,439,686.61
  5. Step 5: Solve for x
    x = 1,564,694,439,686.61/1,389,487.92
  6. Step 6: Final answer
    x = 1,126,094.31

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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.