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Finding the Fourth Proportional to 520,798.73, 718,412.87 and 302,982.93

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Solution

The fourth proportional to 520,798.73, 718,412.87 and 302,982.93 is: 417,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,798.73 : 718,412.87 = 302,982.93 : x
  2. Step 2: Convert to fraction form
    520,798.73/718,412.87 = 302,982.93/x
  3. Step 3: Cross multiply
    520,798.73x = 718,412.87 × 302,982.93
  4. Step 4: Simplify right side
    520,798.73x = 217,666,837,059.77
  5. Step 5: Solve for x
    x = 217,666,837,059.77/520,798.73
  6. Step 6: Final answer
    x = 417,948.10

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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.