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Finding the Fourth Proportional to 667,750.52, 920,987.31 and 574,774.56

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Solution

The fourth proportional to 667,750.52, 920,987.31 and 574,774.56 is: 792,751.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,750.52 : 920,987.31 = 574,774.56 : x
  2. Step 2: Convert to fraction form
    667,750.52/920,987.31 = 574,774.56/x
  3. Step 3: Cross multiply
    667,750.52x = 920,987.31 × 574,774.56
  4. Step 4: Simplify right side
    667,750.52x = 529,360,075,870.83
  5. Step 5: Solve for x
    x = 529,360,075,870.83/667,750.52
  6. Step 6: Final answer
    x = 792,751.28

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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.