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Finding the Fourth Proportional to 653,938.80, 980,940.60 and 339,010.80

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Solution

The fourth proportional to 653,938.80, 980,940.60 and 339,010.80 is: 508,533.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,938.80 : 980,940.60 = 339,010.80 : x
  2. Step 2: Convert to fraction form
    653,938.80/980,940.60 = 339,010.80/x
  3. Step 3: Cross multiply
    653,938.80x = 980,940.60 × 339,010.80
  4. Step 4: Simplify right side
    653,938.80x = 332,549,457,558.48
  5. Step 5: Solve for x
    x = 332,549,457,558.48/653,938.80
  6. Step 6: Final answer
    x = 508,533.00

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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.