Home / 520,303,320.34-718,063,990.36-285,399,381.48

Finding the Fourth Proportional to 520,303,320.34, 718,063,990.36 and 285,399,381.48

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Solution

The fourth proportional to 520,303,320.34, 718,063,990.36 and 285,399,381.48 is: 393,876,054.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,303,320.34 : 718,063,990.36 = 285,399,381.48 : x
  2. Step 2: Convert to fraction form
    520,303,320.34/718,063,990.36 = 285,399,381.48/x
  3. Step 3: Cross multiply
    520,303,320.34x = 718,063,990.36 × 285,399,381.48
  4. Step 4: Simplify right side
    520,303,320.34x = 204,935,018,711,804,704
  5. Step 5: Solve for x
    x = 204,935,018,711,804,704/520,303,320.34
  6. Step 6: Final answer
    x = 393,876,054.03

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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.