Home / 771,360.14-1,064,123.69-499,515.56

Finding the Fourth Proportional to 771,360.14, 1,064,123.69 and 499,515.56

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Solution

The fourth proportional to 771,360.14, 1,064,123.69 and 499,515.56 is: 689,102.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,360.14 : 1,064,123.69 = 499,515.56 : x
  2. Step 2: Convert to fraction form
    771,360.14/1,064,123.69 = 499,515.56/x
  3. Step 3: Cross multiply
    771,360.14x = 1,064,123.69 × 499,515.56
  4. Step 4: Simplify right side
    771,360.14x = 531,546,333,101.42
  5. Step 5: Solve for x
    x = 531,546,333,101.42/771,360.14
  6. Step 6: Final answer
    x = 689,102.68

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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.