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Finding the Fourth Proportional to 885,743,277.80, 1,328,614,916.70 and 516,899,604.20

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Solution

The fourth proportional to 885,743,277.80, 1,328,614,916.70 and 516,899,604.20 is: 775,349,406.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,743,277.80 : 1,328,614,916.70 = 516,899,604.20 : x
  2. Step 2: Convert to fraction form
    885,743,277.80/1,328,614,916.70 = 516,899,604.20/x
  3. Step 3: Cross multiply
    885,743,277.80x = 1,328,614,916.70 × 516,899,604.20
  4. Step 4: Simplify right side
    885,743,277.80x = 686,760,524,576,445,952
  5. Step 5: Solve for x
    x = 686,760,524,576,445,952/885,743,277.80
  6. Step 6: Final answer
    x = 775,349,406.30

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1.5x scale

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.