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Finding the Fourth Proportional to 5,266,287.72, 7,899,430.86 and 1,853,770.68

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Solution

The fourth proportional to 5,266,287.72, 7,899,430.86 and 1,853,770.68 is: 2,780,655.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,266,287.72 : 7,899,430.86 = 1,853,770.68 : x
  2. Step 2: Convert to fraction form
    5,266,287.72/7,899,430.86 = 1,853,770.68/x
  3. Step 3: Cross multiply
    5,266,287.72x = 7,899,430.86 × 1,853,770.68
  4. Step 4: Simplify right side
    5,266,287.72x = 14,643,733,316,955.19
  5. Step 5: Solve for x
    x = 14,643,733,316,955.19/5,266,287.72
  6. Step 6: Final answer
    x = 2,780,655.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.