Home / 692,880.76-1,039,665.66-389,086.12

Finding the Fourth Proportional to 692,880.76, 1,039,665.66 and 389,086.12

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Solution

The fourth proportional to 692,880.76, 1,039,665.66 and 389,086.12 is: 583,822.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,880.76 : 1,039,665.66 = 389,086.12 : x
  2. Step 2: Convert to fraction form
    692,880.76/1,039,665.66 = 389,086.12/x
  3. Step 3: Cross multiply
    692,880.76x = 1,039,665.66 × 389,086.12
  4. Step 4: Simplify right side
    692,880.76x = 404,519,477,746.64
  5. Step 5: Solve for x
    x = 404,519,477,746.64/692,880.76
  6. Step 6: Final answer
    x = 583,822.64

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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.