Home / 1,178,707.71-1,627,014.88-765,809.40

Finding the Fourth Proportional to 1,178,707.71, 1,627,014.88 and 765,809.40

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Solution

The fourth proportional to 1,178,707.71, 1,627,014.88 and 765,809.40 is: 1,057,075.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178,707.71 : 1,627,014.88 = 765,809.40 : x
  2. Step 2: Convert to fraction form
    1,178,707.71/1,627,014.88 = 765,809.40/x
  3. Step 3: Cross multiply
    1,178,707.71x = 1,627,014.88 × 765,809.40
  4. Step 4: Simplify right side
    1,178,707.71x = 1,245,983,278,994.27
  5. Step 5: Solve for x
    x = 1,245,983,278,994.27/1,178,707.71
  6. Step 6: Final answer
    x = 1,057,075.71

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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.