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Finding the Fourth Proportional to 554,464.94, 765,170.42 and 312,752.32

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Solution

The fourth proportional to 554,464.94, 765,170.42 and 312,752.32 is: 431,603.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,464.94 : 765,170.42 = 312,752.32 : x
  2. Step 2: Convert to fraction form
    554,464.94/765,170.42 = 312,752.32/x
  3. Step 3: Cross multiply
    554,464.94x = 765,170.42 × 312,752.32
  4. Step 4: Simplify right side
    554,464.94x = 239,308,820,573.69
  5. Step 5: Solve for x
    x = 239,308,820,573.69/554,464.94
  6. Step 6: Final answer
    x = 431,603.16

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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.