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Finding the Fourth Proportional to 421,235.04, 628,592.64 and 376,374.24

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Solution

The fourth proportional to 421,235.04, 628,592.64 and 376,374.24 is: 561,648.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,235.04 : 628,592.64 = 376,374.24 : x
  2. Step 2: Convert to fraction form
    421,235.04/628,592.64 = 376,374.24/x
  3. Step 3: Cross multiply
    421,235.04x = 628,592.64 × 376,374.24
  4. Step 4: Simplify right side
    421,235.04x = 236,586,077,149.59
  5. Step 5: Solve for x
    x = 236,586,077,149.59/421,235.04
  6. Step 6: Final answer
    x = 561,648.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.