Home / 688,538.40-1,032,807.60-641,299.20

Finding the Fourth Proportional to 688,538.40, 1,032,807.60 and 641,299.20

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Solution

The fourth proportional to 688,538.40, 1,032,807.60 and 641,299.20 is: 961,948.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,538.40 : 1,032,807.60 = 641,299.20 : x
  2. Step 2: Convert to fraction form
    688,538.40/1,032,807.60 = 641,299.20/x
  3. Step 3: Cross multiply
    688,538.40x = 1,032,807.60 × 641,299.20
  4. Step 4: Simplify right side
    688,538.40x = 662,338,687,633.92
  5. Step 5: Solve for x
    x = 662,338,687,633.92/688,538.40
  6. Step 6: Final answer
    x = 961,948.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.