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Finding the Fourth Proportional to 622,403.40, 931,454.70 and 373,264.20

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Solution

The fourth proportional to 622,403.40, 931,454.70 and 373,264.20 is: 558,606.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,403.40 : 931,454.70 = 373,264.20 : x
  2. Step 2: Convert to fraction form
    622,403.40/931,454.70 = 373,264.20/x
  3. Step 3: Cross multiply
    622,403.40x = 931,454.70 × 373,264.20
  4. Step 4: Simplify right side
    622,403.40x = 347,678,693,431.74
  5. Step 5: Solve for x
    x = 347,678,693,431.74/622,403.40
  6. Step 6: Final answer
    x = 558,606.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.