Home / 691,964.75-1,038,410.10-287,156.95

Finding the Fourth Proportional to 691,964.75, 1,038,410.10 and 287,156.95

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Solution

The fourth proportional to 691,964.75, 1,038,410.10 and 287,156.95 is: 430,927.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,964.75 : 1,038,410.10 = 287,156.95 : x
  2. Step 2: Convert to fraction form
    691,964.75/1,038,410.10 = 287,156.95/x
  3. Step 3: Cross multiply
    691,964.75x = 1,038,410.10 × 287,156.95
  4. Step 4: Simplify right side
    691,964.75x = 298,186,675,508.24
  5. Step 5: Solve for x
    x = 298,186,675,508.24/691,964.75
  6. Step 6: Final answer
    x = 430,927.55

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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.