Home / 771,463.09-1,064,388.76-499,099.56

Finding the Fourth Proportional to 771,463.09, 1,064,388.76 and 499,099.56

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Solution

The fourth proportional to 771,463.09, 1,064,388.76 and 499,099.56 is: 688,608.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,463.09 : 1,064,388.76 = 499,099.56 : x
  2. Step 2: Convert to fraction form
    771,463.09/1,064,388.76 = 499,099.56/x
  3. Step 3: Cross multiply
    771,463.09x = 1,064,388.76 × 499,099.56
  4. Step 4: Simplify right side
    771,463.09x = 531,235,961,784.95
  5. Step 5: Solve for x
    x = 531,235,961,784.95/771,463.09
  6. Step 6: Final answer
    x = 688,608.40

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Double scale
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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.