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Finding the Fourth Proportional to 690,391.60, 952,762.10 and 380,316.67

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Solution

The fourth proportional to 690,391.60, 952,762.10 and 380,316.67 is: 524,848.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,391.60 : 952,762.10 = 380,316.67 : x
  2. Step 2: Convert to fraction form
    690,391.60/952,762.10 = 380,316.67/x
  3. Step 3: Cross multiply
    690,391.60x = 952,762.10 × 380,316.67
  4. Step 4: Simplify right side
    690,391.60x = 362,351,309,174.21
  5. Step 5: Solve for x
    x = 362,351,309,174.21/690,391.60
  6. Step 6: Final answer
    x = 524,848.95

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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.