Home / 807,856.10-1,211,784.15-509,257.70

Finding the Fourth Proportional to 807,856.10, 1,211,784.15 and 509,257.70

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Solution

The fourth proportional to 807,856.10, 1,211,784.15 and 509,257.70 is: 763,886.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,856.10 : 1,211,784.15 = 509,257.70 : x
  2. Step 2: Convert to fraction form
    807,856.10/1,211,784.15 = 509,257.70/x
  3. Step 3: Cross multiply
    807,856.10x = 1,211,784.15 × 509,257.70
  4. Step 4: Simplify right side
    807,856.10x = 617,110,409,125.46
  5. Step 5: Solve for x
    x = 617,110,409,125.46/807,856.10
  6. Step 6: Final answer
    x = 763,886.55

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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.