Home / 778,570.84-1,074,427.86-439,039.18

Finding the Fourth Proportional to 778,570.84, 1,074,427.86 and 439,039.18

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Solution

The fourth proportional to 778,570.84, 1,074,427.86 and 439,039.18 is: 605,874.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,570.84 : 1,074,427.86 = 439,039.18 : x
  2. Step 2: Convert to fraction form
    778,570.84/1,074,427.86 = 439,039.18/x
  3. Step 3: Cross multiply
    778,570.84x = 1,074,427.86 × 439,039.18
  4. Step 4: Simplify right side
    778,570.84x = 471,715,926,623.56
  5. Step 5: Solve for x
    x = 471,715,926,623.56/778,570.84
  6. Step 6: Final answer
    x = 605,874.13

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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.