Home / 905,411.77-1,249,467.91-497,539.89

Finding the Fourth Proportional to 905,411.77, 1,249,467.91 and 497,539.89

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Solution

The fourth proportional to 905,411.77, 1,249,467.91 and 497,539.89 is: 686,604.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,411.77 : 1,249,467.91 = 497,539.89 : x
  2. Step 2: Convert to fraction form
    905,411.77/1,249,467.91 = 497,539.89/x
  3. Step 3: Cross multiply
    905,411.77x = 1,249,467.91 × 497,539.89
  4. Step 4: Simplify right side
    905,411.77x = 621,660,126,499.93
  5. Step 5: Solve for x
    x = 621,660,126,499.93/905,411.77
  6. Step 6: Final answer
    x = 686,604.87

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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.