Home / 778,617.84-1,074,459.96-439,117.68

Finding the Fourth Proportional to 778,617.84, 1,074,459.96 and 439,117.68

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Solution

The fourth proportional to 778,617.84, 1,074,459.96 and 439,117.68 is: 605,963.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,617.84 : 1,074,459.96 = 439,117.68 : x
  2. Step 2: Convert to fraction form
    778,617.84/1,074,459.96 = 439,117.68/x
  3. Step 3: Cross multiply
    778,617.84x = 1,074,459.96 × 439,117.68
  4. Step 4: Simplify right side
    778,617.84x = 471,814,364,888.09
  5. Step 5: Solve for x
    x = 471,814,364,888.09/778,617.84
  6. Step 6: Final answer
    x = 605,963.98

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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.