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Finding the Fourth Proportional to 429,771.02, 643,606.50 and 370,984.46

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Solution

The fourth proportional to 429,771.02, 643,606.50 and 370,984.46 is: 555,570.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,771.02 : 643,606.50 = 370,984.46 : x
  2. Step 2: Convert to fraction form
    429,771.02/643,606.50 = 370,984.46/x
  3. Step 3: Cross multiply
    429,771.02x = 643,606.50 × 370,984.46
  4. Step 4: Simplify right side
    429,771.02x = 238,768,009,854.99
  5. Step 5: Solve for x
    x = 238,768,009,854.99/429,771.02
  6. Step 6: Final answer
    x = 555,570.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.