Home / 771,813.40-1,157,720.10-210,847.90

Finding the Fourth Proportional to 771,813.40, 1,157,720.10 and 210,847.90

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Solution

The fourth proportional to 771,813.40, 1,157,720.10 and 210,847.90 is: 316,271.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,813.40 : 1,157,720.10 = 210,847.90 : x
  2. Step 2: Convert to fraction form
    771,813.40/1,157,720.10 = 210,847.90/x
  3. Step 3: Cross multiply
    771,813.40x = 1,157,720.10 × 210,847.90
  4. Step 4: Simplify right side
    771,813.40x = 244,102,851,872.79
  5. Step 5: Solve for x
    x = 244,102,851,872.79/771,813.40
  6. Step 6: Final answer
    x = 316,271.85

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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.