Home / 920,720.11-1,270,657.61-558,159.25

Finding the Fourth Proportional to 920,720.11, 1,270,657.61 and 558,159.25

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Solution

The fourth proportional to 920,720.11, 1,270,657.61 and 558,159.25 is: 770,298.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,720.11 : 1,270,657.61 = 558,159.25 : x
  2. Step 2: Convert to fraction form
    920,720.11/1,270,657.61 = 558,159.25/x
  3. Step 3: Cross multiply
    920,720.11x = 1,270,657.61 × 558,159.25
  4. Step 4: Simplify right side
    920,720.11x = 709,229,289,460.31
  5. Step 5: Solve for x
    x = 709,229,289,460.31/920,720.11
  6. Step 6: Final answer
    x = 770,298.47

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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.