Home / 1,117,130.76-1,536,802.77-978,686.22

Finding the Fourth Proportional to 1,117,130.76, 1,536,802.77 and 978,686.22

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Solution

The fourth proportional to 1,117,130.76, 1,536,802.77 and 978,686.22 is: 1,346,348.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,117,130.76 : 1,536,802.77 = 978,686.22 : x
  2. Step 2: Convert to fraction form
    1,117,130.76/1,536,802.77 = 978,686.22/x
  3. Step 3: Cross multiply
    1,117,130.76x = 1,536,802.77 × 978,686.22
  4. Step 4: Simplify right side
    1,117,130.76x = 1,504,047,698,967.66
  5. Step 5: Solve for x
    x = 1,504,047,698,967.66/1,117,130.76
  6. Step 6: Final answer
    x = 1,346,348.83

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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.