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Finding the Fourth Proportional to 554,860.12, 765,709.59 and 313,152.88

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Solution

The fourth proportional to 554,860.12, 765,709.59 and 313,152.88 is: 432,152.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,860.12 : 765,709.59 = 313,152.88 : x
  2. Step 2: Convert to fraction form
    554,860.12/765,709.59 = 313,152.88/x
  3. Step 3: Cross multiply
    554,860.12x = 765,709.59 × 313,152.88
  4. Step 4: Simplify right side
    554,860.12x = 239,784,163,352.12
  5. Step 5: Solve for x
    x = 239,784,163,352.12/554,860.12
  6. Step 6: Final answer
    x = 432,152.46

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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.