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Finding the Fourth Proportional to 761,693.12, 1,051,614.24 and 490,232.48

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Solution

The fourth proportional to 761,693.12, 1,051,614.24 and 490,232.48 is: 676,828.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,693.12 : 1,051,614.24 = 490,232.48 : x
  2. Step 2: Convert to fraction form
    761,693.12/1,051,614.24 = 490,232.48/x
  3. Step 3: Cross multiply
    761,693.12x = 1,051,614.24 × 490,232.48
  4. Step 4: Simplify right side
    761,693.12x = 515,535,456,878.52
  5. Step 5: Solve for x
    x = 515,535,456,878.52/761,693.12
  6. Step 6: Final answer
    x = 676,828.30

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1.5x scale

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.