Home / 905,491.33-1,249,607.07-497,630.86

Finding the Fourth Proportional to 905,491.33, 1,249,607.07 and 497,630.86

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Solution

The fourth proportional to 905,491.33, 1,249,607.07 and 497,630.86 is: 686,746.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,491.33 : 1,249,607.07 = 497,630.86 : x
  2. Step 2: Convert to fraction form
    905,491.33/1,249,607.07 = 497,630.86/x
  3. Step 3: Cross multiply
    905,491.33x = 1,249,607.07 × 497,630.86
  4. Step 4: Simplify right side
    905,491.33x = 621,843,037,782.16
  5. Step 5: Solve for x
    x = 621,843,037,782.16/905,491.33
  6. Step 6: Final answer
    x = 686,746.54

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Double scale
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Similar ratio
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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.