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Finding the Fourth Proportional to 654,409.20, 980,404.20 and 373,090.80

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Solution

The fourth proportional to 654,409.20, 980,404.20 and 373,090.80 is: 558,946.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,409.20 : 980,404.20 = 373,090.80 : x
  2. Step 2: Convert to fraction form
    654,409.20/980,404.20 = 373,090.80/x
  3. Step 3: Cross multiply
    654,409.20x = 980,404.20 × 373,090.80
  4. Step 4: Simplify right side
    654,409.20x = 365,779,787,301.36
  5. Step 5: Solve for x
    x = 365,779,787,301.36/654,409.20
  6. Step 6: Final answer
    x = 558,946.58

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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.