Home / 691,966.80-1,037,950.20-318,718.80

Finding the Fourth Proportional to 691,966.80, 1,037,950.20 and 318,718.80

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Solution

The fourth proportional to 691,966.80, 1,037,950.20 and 318,718.80 is: 478,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,966.80 : 1,037,950.20 = 318,718.80 : x
  2. Step 2: Convert to fraction form
    691,966.80/1,037,950.20 = 318,718.80/x
  3. Step 3: Cross multiply
    691,966.80x = 1,037,950.20 × 318,718.80
  4. Step 4: Simplify right side
    691,966.80x = 330,814,242,203.76
  5. Step 5: Solve for x
    x = 330,814,242,203.76/691,966.80
  6. Step 6: Final answer
    x = 478,078.20

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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.