Home / 688,130.85-1,031,777.10-308,977.95

Finding the Fourth Proportional to 688,130.85, 1,031,777.10 and 308,977.95

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Solution

The fourth proportional to 688,130.85, 1,031,777.10 and 308,977.95 is: 463,278.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,130.85 : 1,031,777.10 = 308,977.95 : x
  2. Step 2: Convert to fraction form
    688,130.85/1,031,777.10 = 308,977.95/x
  3. Step 3: Cross multiply
    688,130.85x = 1,031,777.10 × 308,977.95
  4. Step 4: Simplify right side
    688,130.85x = 318,796,373,214.95
  5. Step 5: Solve for x
    x = 318,796,373,214.95/688,130.85
  6. Step 6: Final answer
    x = 463,278.71

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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.