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Finding the Fourth Proportional to 509,007.96, 702,495.42 and 307,803.48

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Solution

The fourth proportional to 509,007.96, 702,495.42 and 307,803.48 is: 424,807.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,007.96 : 702,495.42 = 307,803.48 : x
  2. Step 2: Convert to fraction form
    509,007.96/702,495.42 = 307,803.48/x
  3. Step 3: Cross multiply
    509,007.96x = 702,495.42 × 307,803.48
  4. Step 4: Simplify right side
    509,007.96x = 216,230,534,960.06
  5. Step 5: Solve for x
    x = 216,230,534,960.06/509,007.96
  6. Step 6: Final answer
    x = 424,807.77

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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.