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Finding the Fourth Proportional to 647,633.80, 971,030.22 and 310,666.60

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Solution

The fourth proportional to 647,633.80, 971,030.22 and 310,666.60 is: 465,798.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,633.80 : 971,030.22 = 310,666.60 : x
  2. Step 2: Convert to fraction form
    647,633.80/971,030.22 = 310,666.60/x
  3. Step 3: Cross multiply
    647,633.80x = 971,030.22 × 310,666.60
  4. Step 4: Simplify right side
    647,633.80x = 301,666,656,944.65
  5. Step 5: Solve for x
    x = 301,666,656,944.65/647,633.80
  6. Step 6: Final answer
    x = 465,798.20

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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.