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Finding the Fourth Proportional to 633,398.40, 874,087.20 and 346,936.32

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Solution

The fourth proportional to 633,398.40, 874,087.20 and 346,936.32 is: 478,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,398.40 : 874,087.20 = 346,936.32 : x
  2. Step 2: Convert to fraction form
    633,398.40/874,087.20 = 346,936.32/x
  3. Step 3: Cross multiply
    633,398.40x = 874,087.20 × 346,936.32
  4. Step 4: Simplify right side
    633,398.40x = 303,252,596,527.10
  5. Step 5: Solve for x
    x = 303,252,596,527.10/633,398.40
  6. Step 6: Final answer
    x = 478,770.70

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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.