Home / 815,403.81-1,125,820.24-509,617.65

Finding the Fourth Proportional to 815,403.81, 1,125,820.24 and 509,617.65

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Solution

The fourth proportional to 815,403.81, 1,125,820.24 and 509,617.65 is: 703,624.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,403.81 : 1,125,820.24 = 509,617.65 : x
  2. Step 2: Convert to fraction form
    815,403.81/1,125,820.24 = 509,617.65/x
  3. Step 3: Cross multiply
    815,403.81x = 1,125,820.24 × 509,617.65
  4. Step 4: Simplify right side
    815,403.81x = 573,737,865,031.24
  5. Step 5: Solve for x
    x = 573,737,865,031.24/815,403.81
  6. Step 6: Final answer
    x = 703,624.21

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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.