Home / 769,728.80-1,153,815.60-349,306.40

Finding the Fourth Proportional to 769,728.80, 1,153,815.60 and 349,306.40

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Solution

The fourth proportional to 769,728.80, 1,153,815.60 and 349,306.40 is: 523,606.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,728.80 : 1,153,815.60 = 349,306.40 : x
  2. Step 2: Convert to fraction form
    769,728.80/1,153,815.60 = 349,306.40/x
  3. Step 3: Cross multiply
    769,728.80x = 1,153,815.60 × 349,306.40
  4. Step 4: Simplify right side
    769,728.80x = 403,035,173,499.84
  5. Step 5: Solve for x
    x = 403,035,173,499.84/769,728.80
  6. Step 6: Final answer
    x = 523,606.72

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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.