Home / 905,434.92-1,249,425.40-497,515.68

Finding the Fourth Proportional to 905,434.92, 1,249,425.40 and 497,515.68

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Solution

The fourth proportional to 905,434.92, 1,249,425.40 and 497,515.68 is: 686,530.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,434.92 : 1,249,425.40 = 497,515.68 : x
  2. Step 2: Convert to fraction form
    905,434.92/1,249,425.40 = 497,515.68/x
  3. Step 3: Cross multiply
    905,434.92x = 1,249,425.40 × 497,515.68
  4. Step 4: Simplify right side
    905,434.92x = 621,608,727,490.27
  5. Step 5: Solve for x
    x = 621,608,727,490.27/905,434.92
  6. Step 6: Final answer
    x = 686,530.54

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Double scale
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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.