Home / 818,270.29-1,129,132.17-455,727.89

Finding the Fourth Proportional to 818,270.29, 1,129,132.17 and 455,727.89

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Solution

The fourth proportional to 818,270.29, 1,129,132.17 and 455,727.89 is: 628,859.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,270.29 : 1,129,132.17 = 455,727.89 : x
  2. Step 2: Convert to fraction form
    818,270.29/1,129,132.17 = 455,727.89/x
  3. Step 3: Cross multiply
    818,270.29x = 1,129,132.17 × 455,727.89
  4. Step 4: Simplify right side
    818,270.29x = 514,577,017,607.12
  5. Step 5: Solve for x
    x = 514,577,017,607.12/818,270.29
  6. Step 6: Final answer
    x = 628,859.46

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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.