Home / 918,392,859.72-1,267,327,532.43-521,860,814.82

Finding the Fourth Proportional to 918,392,859.72, 1,267,327,532.43 and 521,860,814.82

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Solution

The fourth proportional to 918,392,859.72, 1,267,327,532.43 and 521,860,814.82 is: 720,136,891.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,392,859.72 : 1,267,327,532.43 = 521,860,814.82 : x
  2. Step 2: Convert to fraction form
    918,392,859.72/1,267,327,532.43 = 521,860,814.82/x
  3. Step 3: Cross multiply
    918,392,859.72x = 1,267,327,532.43 × 521,860,814.82
  4. Step 4: Simplify right side
    918,392,859.72x = 661,368,578,717,739,776
  5. Step 5: Solve for x
    x = 661,368,578,717,739,776/918,392,859.72
  6. Step 6: Final answer
    x = 720,136,891.00

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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.