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Finding the Fourth Proportional to 470,068.45, 649,302.95 and 388,725.26

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Solution

The fourth proportional to 470,068.45, 649,302.95 and 388,725.26 is: 536,944.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,068.45 : 649,302.95 = 388,725.26 : x
  2. Step 2: Convert to fraction form
    470,068.45/649,302.95 = 388,725.26/x
  3. Step 3: Cross multiply
    470,068.45x = 649,302.95 × 388,725.26
  4. Step 4: Simplify right side
    470,068.45x = 252,400,462,994.35
  5. Step 5: Solve for x
    x = 252,400,462,994.35/470,068.45
  6. Step 6: Final answer
    x = 536,944.07

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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.