Home / 1,389,448.67-1,916,830.46-816,230.21

Finding the Fourth Proportional to 1,389,448.67, 1,916,830.46 and 816,230.21

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Solution

The fourth proportional to 1,389,448.67, 1,916,830.46 and 816,230.21 is: 1,126,040.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,448.67 : 1,916,830.46 = 816,230.21 : x
  2. Step 2: Convert to fraction form
    1,389,448.67/1,916,830.46 = 816,230.21/x
  3. Step 3: Cross multiply
    1,389,448.67x = 1,916,830.46 × 816,230.21
  4. Step 4: Simplify right side
    1,389,448.67x = 1,564,574,924,819.05
  5. Step 5: Solve for x
    x = 1,564,574,924,819.05/1,389,448.67
  6. Step 6: Final answer
    x = 1,126,040.10

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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.