Home / 905,659.40-1,249,822.91-497,798.96

Finding the Fourth Proportional to 905,659.40, 1,249,822.91 and 497,798.96

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Solution

The fourth proportional to 905,659.40, 1,249,822.91 and 497,798.96 is: 686,969.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,659.40 : 1,249,822.91 = 497,798.96 : x
  2. Step 2: Convert to fraction form
    905,659.40/1,249,822.91 = 497,798.96/x
  3. Step 3: Cross multiply
    905,659.40x = 1,249,822.91 × 497,798.96
  4. Step 4: Simplify right side
    905,659.40x = 622,160,539,777.56
  5. Step 5: Solve for x
    x = 622,160,539,777.56/905,659.40
  6. Step 6: Final answer
    x = 686,969.67

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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.