Home / 771,817.40-1,157,726.10-210,851.90

Finding the Fourth Proportional to 771,817.40, 1,157,726.10 and 210,851.90

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Solution

The fourth proportional to 771,817.40, 1,157,726.10 and 210,851.90 is: 316,277.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,817.40 : 1,157,726.10 = 210,851.90 : x
  2. Step 2: Convert to fraction form
    771,817.40/1,157,726.10 = 210,851.90/x
  3. Step 3: Cross multiply
    771,817.40x = 1,157,726.10 × 210,851.90
  4. Step 4: Simplify right side
    771,817.40x = 244,108,747,864.59
  5. Step 5: Solve for x
    x = 244,108,747,864.59/771,817.40
  6. Step 6: Final answer
    x = 316,277.85

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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.