Home / 912,879.11-1,259,663.40-525,820.43

Finding the Fourth Proportional to 912,879.11, 1,259,663.40 and 525,820.43

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Solution

The fourth proportional to 912,879.11, 1,259,663.40 and 525,820.43 is: 725,568.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,879.11 : 1,259,663.40 = 525,820.43 : x
  2. Step 2: Convert to fraction form
    912,879.11/1,259,663.40 = 525,820.43/x
  3. Step 3: Cross multiply
    912,879.11x = 1,259,663.40 × 525,820.43
  4. Step 4: Simplify right side
    912,879.11x = 662,356,746,706.81
  5. Step 5: Solve for x
    x = 662,356,746,706.81/912,879.11
  6. Step 6: Final answer
    x = 725,568.96

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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.