Home / 677,925.15-935,974.97-420,075.72

Finding the Fourth Proportional to 677,925.15, 935,974.97 and 420,075.72

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Solution

The fourth proportional to 677,925.15, 935,974.97 and 420,075.72 is: 579,976.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,925.15 : 935,974.97 = 420,075.72 : x
  2. Step 2: Convert to fraction form
    677,925.15/935,974.97 = 420,075.72/x
  3. Step 3: Cross multiply
    677,925.15x = 935,974.97 × 420,075.72
  4. Step 4: Simplify right side
    677,925.15x = 393,180,357,324.35
  5. Step 5: Solve for x
    x = 393,180,357,324.35/677,925.15
  6. Step 6: Final answer
    x = 579,976.06

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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.