Home / 919,195.65-1,378,793.48-288,108.45

Finding the Fourth Proportional to 919,195.65, 1,378,793.48 and 288,108.45

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Solution

The fourth proportional to 919,195.65, 1,378,793.48 and 288,108.45 is: 432,162.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,195.65 : 1,378,793.48 = 288,108.45 : x
  2. Step 2: Convert to fraction form
    919,195.65/1,378,793.48 = 288,108.45/x
  3. Step 3: Cross multiply
    919,195.65x = 1,378,793.48 × 288,108.45
  4. Step 4: Simplify right side
    919,195.65x = 397,242,050,952.36
  5. Step 5: Solve for x
    x = 397,242,050,952.36/919,195.65
  6. Step 6: Final answer
    x = 432,162.68

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Double scale
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Similar ratio
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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.