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Finding the Fourth Proportional to 761,860.95, 1,051,380 and 417,728.31

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Solution

The fourth proportional to 761,860.95, 1,051,380 and 417,728.31 is: 576,471.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,860.95 : 1,051,380 = 417,728.31 : x
  2. Step 2: Convert to fraction form
    761,860.95/1,051,380 = 417,728.31/x
  3. Step 3: Cross multiply
    761,860.95x = 1,051,380 × 417,728.31
  4. Step 4: Simplify right side
    761,860.95x = 439,191,190,567.80
  5. Step 5: Solve for x
    x = 439,191,190,567.80/761,860.95
  6. Step 6: Final answer
    x = 576,471.59

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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.