Home / 1,378,500.32-1,902,220.08-766,654.22

Finding the Fourth Proportional to 1,378,500.32, 1,902,220.08 and 766,654.22

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Solution

The fourth proportional to 1,378,500.32, 1,902,220.08 and 766,654.22 is: 1,057,921.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,500.32 : 1,902,220.08 = 766,654.22 : x
  2. Step 2: Convert to fraction form
    1,378,500.32/1,902,220.08 = 766,654.22/x
  3. Step 3: Cross multiply
    1,378,500.32x = 1,902,220.08 × 766,654.22
  4. Step 4: Simplify right side
    1,378,500.32x = 1,458,345,051,700.74
  5. Step 5: Solve for x
    x = 1,458,345,051,700.74/1,378,500.32
  6. Step 6: Final answer
    x = 1,057,921.45

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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.