Home / 990,936.81-1,367,510.82-561,306.14

Finding the Fourth Proportional to 990,936.81, 1,367,510.82 and 561,306.14

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Solution

The fourth proportional to 990,936.81, 1,367,510.82 and 561,306.14 is: 774,612.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,936.81 : 1,367,510.82 = 561,306.14 : x
  2. Step 2: Convert to fraction form
    990,936.81/1,367,510.82 = 561,306.14/x
  3. Step 3: Cross multiply
    990,936.81x = 1,367,510.82 × 561,306.14
  4. Step 4: Simplify right side
    990,936.81x = 767,592,212,944.88
  5. Step 5: Solve for x
    x = 767,592,212,944.88/990,936.81
  6. Step 6: Final answer
    x = 774,612.67

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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.