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Finding the Fourth Proportional to 511,550.80, 766,289.40 and 289,675.60

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Solution

The fourth proportional to 511,550.80, 766,289.40 and 289,675.60 is: 433,926.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,550.80 : 766,289.40 = 289,675.60 : x
  2. Step 2: Convert to fraction form
    511,550.80/766,289.40 = 289,675.60/x
  3. Step 3: Cross multiply
    511,550.80x = 766,289.40 × 289,675.60
  4. Step 4: Simplify right side
    511,550.80x = 221,975,341,718.64
  5. Step 5: Solve for x
    x = 221,975,341,718.64/511,550.80
  6. Step 6: Final answer
    x = 433,926.29

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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.