Home / 771,356.91-1,064,119.32-499,512.35

Finding the Fourth Proportional to 771,356.91, 1,064,119.32 and 499,512.35

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Solution

The fourth proportional to 771,356.91, 1,064,119.32 and 499,512.35 is: 689,098.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,356.91 : 1,064,119.32 = 499,512.35 : x
  2. Step 2: Convert to fraction form
    771,356.91/1,064,119.32 = 499,512.35/x
  3. Step 3: Cross multiply
    771,356.91x = 1,064,119.32 × 499,512.35
  4. Step 4: Simplify right side
    771,356.91x = 531,540,736,893.01
  5. Step 5: Solve for x
    x = 531,540,736,893.01/771,356.91
  6. Step 6: Final answer
    x = 689,098.30

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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.