Home / 389,022,712.81-536,849,738.68-210,406,800.49

Finding the Fourth Proportional to 389,022,712.81, 536,849,738.68 and 210,406,800.49

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Solution

The fourth proportional to 389,022,712.81, 536,849,738.68 and 210,406,800.49 is: 290,360,516.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,022,712.81 : 536,849,738.68 = 210,406,800.49 : x
  2. Step 2: Convert to fraction form
    389,022,712.81/536,849,738.68 = 210,406,800.49/x
  3. Step 3: Cross multiply
    389,022,712.81x = 536,849,738.68 × 210,406,800.49
  4. Step 4: Simplify right side
    389,022,712.81x = 112,956,835,856,341,136
  5. Step 5: Solve for x
    x = 112,956,835,856,341,136/389,022,712.81
  6. Step 6: Final answer
    x = 290,360,516.59

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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.