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Finding the Fourth Proportional to 720,759.36, 994,675.92 and 478,624.40

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Solution

The fourth proportional to 720,759.36, 994,675.92 and 478,624.40 is: 660,520.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,759.36 : 994,675.92 = 478,624.40 : x
  2. Step 2: Convert to fraction form
    720,759.36/994,675.92 = 478,624.40/x
  3. Step 3: Cross multiply
    720,759.36x = 994,675.92 × 478,624.40
  4. Step 4: Simplify right side
    720,759.36x = 476,076,165,404.45
  5. Step 5: Solve for x
    x = 476,076,165,404.45/720,759.36
  6. Step 6: Final answer
    x = 660,520.27

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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.