Home / 1,387,860.61-1,915,654.91-807,220.31

Finding the Fourth Proportional to 1,387,860.61, 1,915,654.91 and 807,220.31

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Solution

The fourth proportional to 1,387,860.61, 1,915,654.91 and 807,220.31 is: 1,114,200.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,860.61 : 1,915,654.91 = 807,220.31 : x
  2. Step 2: Convert to fraction form
    1,387,860.61/1,915,654.91 = 807,220.31/x
  3. Step 3: Cross multiply
    1,387,860.61x = 1,915,654.91 × 807,220.31
  4. Step 4: Simplify right side
    1,387,860.61x = 1,546,355,550,303.22
  5. Step 5: Solve for x
    x = 1,546,355,550,303.22/1,387,860.61
  6. Step 6: Final answer
    x = 1,114,200.91

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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.