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Finding the Fourth Proportional to 554,589.14, 765,340.38 and 312,870.96

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Solution

The fourth proportional to 554,589.14, 765,340.38 and 312,870.96 is: 431,766.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,589.14 : 765,340.38 = 312,870.96 : x
  2. Step 2: Convert to fraction form
    554,589.14/765,340.38 = 312,870.96/x
  3. Step 3: Cross multiply
    554,589.14x = 765,340.38 × 312,870.96
  4. Step 4: Simplify right side
    554,589.14x = 239,452,779,417.37
  5. Step 5: Solve for x
    x = 239,452,779,417.37/554,589.14
  6. Step 6: Final answer
    x = 431,766.08

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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.