Home / 513,922,398.06-709,213,809.06-278,973,218.10

Finding the Fourth Proportional to 513,922,398.06, 709,213,809.06 and 278,973,218.10

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Solution

The fourth proportional to 513,922,398.06, 709,213,809.06 and 278,973,218.10 is: 384,983,529.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,922,398.06 : 709,213,809.06 = 278,973,218.10 : x
  2. Step 2: Convert to fraction form
    513,922,398.06/709,213,809.06 = 278,973,218.10/x
  3. Step 3: Cross multiply
    513,922,398.06x = 709,213,809.06 × 278,973,218.10
  4. Step 4: Simplify right side
    513,922,398.06x = 197,851,658,634,427,136
  5. Step 5: Solve for x
    x = 197,851,658,634,427,136/513,922,398.06
  6. Step 6: Final answer
    x = 384,983,529.38

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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.