Home / 831,688.95-1,247,670.29-255,297.76

Finding the Fourth Proportional to 831,688.95, 1,247,670.29 and 255,297.76

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Solution

The fourth proportional to 831,688.95, 1,247,670.29 and 255,297.76 is: 382,988.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,688.95 : 1,247,670.29 = 255,297.76 : x
  2. Step 2: Convert to fraction form
    831,688.95/1,247,670.29 = 255,297.76/x
  3. Step 3: Cross multiply
    831,688.95x = 1,247,670.29 × 255,297.76
  4. Step 4: Simplify right side
    831,688.95x = 318,527,430,255.55
  5. Step 5: Solve for x
    x = 318,527,430,255.55/831,688.95
  6. Step 6: Final answer
    x = 382,988.65

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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.