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Finding the Fourth Proportional to 554,417.66, 765,050.38 and 312,759.62

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Solution

The fourth proportional to 554,417.66, 765,050.38 and 312,759.62 is: 431,582.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,417.66 : 765,050.38 = 312,759.62 : x
  2. Step 2: Convert to fraction form
    554,417.66/765,050.38 = 312,759.62/x
  3. Step 3: Cross multiply
    554,417.66x = 765,050.38 × 312,759.62
  4. Step 4: Simplify right side
    554,417.66x = 239,276,867,260.38
  5. Step 5: Solve for x
    x = 239,276,867,260.38/554,417.66
  6. Step 6: Final answer
    x = 431,582.34

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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.