Home / 641,938.30-962,470.05-305,140.30

Finding the Fourth Proportional to 641,938.30, 962,470.05 and 305,140.30

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Solution

The fourth proportional to 641,938.30, 962,470.05 and 305,140.30 is: 457,502.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,938.30 : 962,470.05 = 305,140.30 : x
  2. Step 2: Convert to fraction form
    641,938.30/962,470.05 = 305,140.30/x
  3. Step 3: Cross multiply
    641,938.30x = 962,470.05 × 305,140.30
  4. Step 4: Simplify right side
    641,938.30x = 293,688,399,798.02
  5. Step 5: Solve for x
    x = 293,688,399,798.02/641,938.30
  6. Step 6: Final answer
    x = 457,502.54

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1.5x scale

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.