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Finding the Fourth Proportional to 429,400.70, 643,323.45 and 367,192.70

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Solution

The fourth proportional to 429,400.70, 643,323.45 and 367,192.70 is: 550,124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,400.70 : 643,323.45 = 367,192.70 : x
  2. Step 2: Convert to fraction form
    429,400.70/643,323.45 = 367,192.70/x
  3. Step 3: Cross multiply
    429,400.70x = 643,323.45 × 367,192.70
  4. Step 4: Simplify right side
    429,400.70x = 236,223,674,578.82
  5. Step 5: Solve for x
    x = 236,223,674,578.82/429,400.70
  6. Step 6: Final answer
    x = 550,124.10

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1.5x scale

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.