Home / 771,401.40-1,064,599.80-449,212.56

Finding the Fourth Proportional to 771,401.40, 1,064,599.80 and 449,212.56

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Solution

The fourth proportional to 771,401.40, 1,064,599.80 and 449,212.56 is: 619,951.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,401.40 : 1,064,599.80 = 449,212.56 : x
  2. Step 2: Convert to fraction form
    771,401.40/1,064,599.80 = 449,212.56/x
  3. Step 3: Cross multiply
    771,401.40x = 1,064,599.80 × 449,212.56
  4. Step 4: Simplify right side
    771,401.40x = 478,231,601,533.49
  5. Step 5: Solve for x
    x = 478,231,601,533.49/771,401.40
  6. Step 6: Final answer
    x = 619,951.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.