Home / 389,022,733.67-536,849,767.29-210,406,821.45

Finding the Fourth Proportional to 389,022,733.67, 536,849,767.29 and 210,406,821.45

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Solution

The fourth proportional to 389,022,733.67, 536,849,767.29 and 210,406,821.45 is: 290,360,545.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,022,733.67 : 536,849,767.29 = 210,406,821.45 : x
  2. Step 2: Convert to fraction form
    389,022,733.67/536,849,767.29 = 210,406,821.45/x
  3. Step 3: Cross multiply
    389,022,733.67x = 536,849,767.29 × 210,406,821.45
  4. Step 4: Simplify right side
    389,022,733.67x = 112,956,853,131,661,072
  5. Step 5: Solve for x
    x = 112,956,853,131,661,072/389,022,733.67
  6. Step 6: Final answer
    x = 290,360,545.43

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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.