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Finding the Fourth Proportional to 633,364.70, 874,010.80 and 346,878.64

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Solution

The fourth proportional to 633,364.70, 874,010.80 and 346,878.64 is: 478,674.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,364.70 : 874,010.80 = 346,878.64 : x
  2. Step 2: Convert to fraction form
    633,364.70/874,010.80 = 346,878.64/x
  3. Step 3: Cross multiply
    633,364.70x = 874,010.80 × 346,878.64
  4. Step 4: Simplify right side
    633,364.70x = 303,175,677,649.31
  5. Step 5: Solve for x
    x = 303,175,677,649.31/633,364.70
  6. Step 6: Final answer
    x = 478,674.73

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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.