Home / 857,275.65-1,286,684.39-458,257.50

Finding the Fourth Proportional to 857,275.65, 1,286,684.39 and 458,257.50

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Solution

The fourth proportional to 857,275.65, 1,286,684.39 and 458,257.50 is: 687,798.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,275.65 : 1,286,684.39 = 458,257.50 : x
  2. Step 2: Convert to fraction form
    857,275.65/1,286,684.39 = 458,257.50/x
  3. Step 3: Cross multiply
    857,275.65x = 1,286,684.39 × 458,257.50
  4. Step 4: Simplify right side
    857,275.65x = 589,632,772,996.07
  5. Step 5: Solve for x
    x = 589,632,772,996.07/857,275.65
  6. Step 6: Final answer
    x = 687,798.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.