Home / 688,506.20-1,032,759.30-511,359.20

Finding the Fourth Proportional to 688,506.20, 1,032,759.30 and 511,359.20

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Solution

The fourth proportional to 688,506.20, 1,032,759.30 and 511,359.20 is: 767,038.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,506.20 : 1,032,759.30 = 511,359.20 : x
  2. Step 2: Convert to fraction form
    688,506.20/1,032,759.30 = 511,359.20/x
  3. Step 3: Cross multiply
    688,506.20x = 1,032,759.30 × 511,359.20
  4. Step 4: Simplify right side
    688,506.20x = 528,110,969,440.56
  5. Step 5: Solve for x
    x = 528,110,969,440.56/688,506.20
  6. Step 6: Final answer
    x = 767,038.80

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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.