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Finding the Fourth Proportional to 439,809.60, 616,977.60 and 439,809.60

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Solution

The fourth proportional to 439,809.60, 616,977.60 and 439,809.60 is: 616,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,809.60 : 616,977.60 = 439,809.60 : x
  2. Step 2: Convert to fraction form
    439,809.60/616,977.60 = 439,809.60/x
  3. Step 3: Cross multiply
    439,809.60x = 616,977.60 × 439,809.60
  4. Step 4: Simplify right side
    439,809.60x = 271,352,671,464.96
  5. Step 5: Solve for x
    x = 271,352,671,464.96/439,809.60
  6. Step 6: Final answer
    x = 616,977.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.