Home / 778,736.25-1,074,656.07-421,040.25

Finding the Fourth Proportional to 778,736.25, 1,074,656.07 and 421,040.25

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Solution

The fourth proportional to 778,736.25, 1,074,656.07 and 421,040.25 is: 581,035.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,736.25 : 1,074,656.07 = 421,040.25 : x
  2. Step 2: Convert to fraction form
    778,736.25/1,074,656.07 = 421,040.25/x
  3. Step 3: Cross multiply
    778,736.25x = 1,074,656.07 × 421,040.25
  4. Step 4: Simplify right side
    778,736.25x = 452,473,460,376.82
  5. Step 5: Solve for x
    x = 452,473,460,376.82/778,736.25
  6. Step 6: Final answer
    x = 581,035.57

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1.5x scale

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.