Home / 645,065.25-890,147.93-358,574.73

Finding the Fourth Proportional to 645,065.25, 890,147.93 and 358,574.73

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Solution

The fourth proportional to 645,065.25, 890,147.93 and 358,574.73 is: 494,809.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,065.25 : 890,147.93 = 358,574.73 : x
  2. Step 2: Convert to fraction form
    645,065.25/890,147.93 = 358,574.73/x
  3. Step 3: Cross multiply
    645,065.25x = 890,147.93 × 358,574.73
  4. Step 4: Simplify right side
    645,065.25x = 319,184,551,866.94
  5. Step 5: Solve for x
    x = 319,184,551,866.94/645,065.25
  6. Step 6: Final answer
    x = 494,809.71

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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.