Home / 919,216.89-1,379,046.80-288,130.70

Finding the Fourth Proportional to 919,216.89, 1,379,046.80 and 288,130.70

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Solution

The fourth proportional to 919,216.89, 1,379,046.80 and 288,130.70 is: 432,265.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,216.89 : 1,379,046.80 = 288,130.70 : x
  2. Step 2: Convert to fraction form
    919,216.89/1,379,046.80 = 288,130.70/x
  3. Step 3: Cross multiply
    919,216.89x = 1,379,046.80 × 288,130.70
  4. Step 4: Simplify right side
    919,216.89x = 397,345,723,984.70
  5. Step 5: Solve for x
    x = 397,345,723,984.70/919,216.89
  6. Step 6: Final answer
    x = 432,265.47

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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.