Home / 839,672.70-1,258,702.65-278,418.30

Finding the Fourth Proportional to 839,672.70, 1,258,702.65 and 278,418.30

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Solution

The fourth proportional to 839,672.70, 1,258,702.65 and 278,418.30 is: 417,360.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,672.70 : 1,258,702.65 = 278,418.30 : x
  2. Step 2: Convert to fraction form
    839,672.70/1,258,702.65 = 278,418.30/x
  3. Step 3: Cross multiply
    839,672.70x = 1,258,702.65 × 278,418.30
  4. Step 4: Simplify right side
    839,672.70x = 350,445,852,018.50
  5. Step 5: Solve for x
    x = 350,445,852,018.50/839,672.70
  6. Step 6: Final answer
    x = 417,360.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.