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Finding the Fourth Proportional to 634,009.34, 874,422.72 and 557,364.56

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Solution

The fourth proportional to 634,009.34, 874,422.72 and 557,364.56 is: 768,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,009.34 : 874,422.72 = 557,364.56 : x
  2. Step 2: Convert to fraction form
    634,009.34/874,422.72 = 557,364.56/x
  3. Step 3: Cross multiply
    634,009.34x = 874,422.72 × 557,364.56
  4. Step 4: Simplify right side
    634,009.34x = 487,372,234,586.80
  5. Step 5: Solve for x
    x = 487,372,234,586.80/634,009.34
  6. Step 6: Final answer
    x = 768,714.60

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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.