Home / 912,151.13-1,258,846.31-509,820.89

Finding the Fourth Proportional to 912,151.13, 1,258,846.31 and 509,820.89

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Solution

The fourth proportional to 912,151.13, 1,258,846.31 and 509,820.89 is: 703,596.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,151.13 : 1,258,846.31 = 509,820.89 : x
  2. Step 2: Convert to fraction form
    912,151.13/1,258,846.31 = 509,820.89/x
  3. Step 3: Cross multiply
    912,151.13x = 1,258,846.31 × 509,820.89
  4. Step 4: Simplify right side
    912,151.13x = 641,786,141,117.74
  5. Step 5: Solve for x
    x = 641,786,141,117.74/912,151.13
  6. Step 6: Final answer
    x = 703,596.28

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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.