Home / 831,689.95-1,247,671.79-255,298.76

Finding the Fourth Proportional to 831,689.95, 1,247,671.79 and 255,298.76

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Solution

The fourth proportional to 831,689.95, 1,247,671.79 and 255,298.76 is: 382,990.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,689.95 : 1,247,671.79 = 255,298.76 : x
  2. Step 2: Convert to fraction form
    831,689.95/1,247,671.79 = 255,298.76/x
  3. Step 3: Cross multiply
    831,689.95x = 1,247,671.79 × 255,298.76
  4. Step 4: Simplify right side
    831,689.95x = 318,529,060,873.98
  5. Step 5: Solve for x
    x = 318,529,060,873.98/831,689.95
  6. Step 6: Final answer
    x = 382,990.15

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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.