Home / 677,875.53-935,551.19-391,395.14

Finding the Fourth Proportional to 677,875.53, 935,551.19 and 391,395.14

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Solution

The fourth proportional to 677,875.53, 935,551.19 and 391,395.14 is: 540,173.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,875.53 : 935,551.19 = 391,395.14 : x
  2. Step 2: Convert to fraction form
    677,875.53/935,551.19 = 391,395.14/x
  3. Step 3: Cross multiply
    677,875.53x = 935,551.19 × 391,395.14
  4. Step 4: Simplify right side
    677,875.53x = 366,170,182,352.49
  5. Step 5: Solve for x
    x = 366,170,182,352.49/677,875.53
  6. Step 6: Final answer
    x = 540,173.18

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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.