Home / 771,548.95-1,064,507.21-499,185.43

Finding the Fourth Proportional to 771,548.95, 1,064,507.21 and 499,185.43

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Solution

The fourth proportional to 771,548.95, 1,064,507.21 and 499,185.43 is: 688,726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,548.95 : 1,064,507.21 = 499,185.43 : x
  2. Step 2: Convert to fraction form
    771,548.95/1,064,507.21 = 499,185.43/x
  3. Step 3: Cross multiply
    771,548.95x = 1,064,507.21 × 499,185.43
  4. Step 4: Simplify right side
    771,548.95x = 531,386,494,872.47
  5. Step 5: Solve for x
    x = 531,386,494,872.47/771,548.95
  6. Step 6: Final answer
    x = 688,726.88

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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.