Home / 771,510.25-1,064,438.11-499,786.44

Finding the Fourth Proportional to 771,510.25, 1,064,438.11 and 499,786.44

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Solution

The fourth proportional to 771,510.25, 1,064,438.11 and 499,786.44 is: 689,545.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,510.25 : 1,064,438.11 = 499,786.44 : x
  2. Step 2: Convert to fraction form
    771,510.25/1,064,438.11 = 499,786.44/x
  3. Step 3: Cross multiply
    771,510.25x = 1,064,438.11 × 499,786.44
  4. Step 4: Simplify right side
    771,510.25x = 531,991,733,597.23
  5. Step 5: Solve for x
    x = 531,991,733,597.23/771,510.25
  6. Step 6: Final answer
    x = 689,545.91

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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.