Home / 378,124,776.63-521,814,468.30-210,871,611.93

Finding the Fourth Proportional to 378,124,776.63, 521,814,468.30 and 210,871,611.93

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Solution

The fourth proportional to 378,124,776.63, 521,814,468.30 and 210,871,611.93 is: 291,004,094.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,124,776.63 : 521,814,468.30 = 210,871,611.93 : x
  2. Step 2: Convert to fraction form
    378,124,776.63/521,814,468.30 = 210,871,611.93/x
  3. Step 3: Cross multiply
    378,124,776.63x = 521,814,468.30 × 210,871,611.93
  4. Step 4: Simplify right side
    378,124,776.63x = 110,035,858,058,816,896
  5. Step 5: Solve for x
    x = 110,035,858,058,816,896/378,124,776.63
  6. Step 6: Final answer
    x = 291,004,094.04

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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.