Home / 1,378,690.47-1,902,565.56-766,830.06

Finding the Fourth Proportional to 1,378,690.47, 1,902,565.56 and 766,830.06

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Solution

The fourth proportional to 1,378,690.47, 1,902,565.56 and 766,830.06 is: 1,058,210.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378,690.47 : 1,902,565.56 = 766,830.06 : x
  2. Step 2: Convert to fraction form
    1,378,690.47/1,902,565.56 = 766,830.06/x
  3. Step 3: Cross multiply
    1,378,690.47x = 1,902,565.56 × 766,830.06
  4. Step 4: Simplify right side
    1,378,690.47x = 1,458,944,470,755.31
  5. Step 5: Solve for x
    x = 1,458,944,470,755.31/1,378,690.47
  6. Step 6: Final answer
    x = 1,058,210.31

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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.