Home / 645,468.29-890,777.79-358,982.22

Finding the Fourth Proportional to 645,468.29, 890,777.79 and 358,982.22

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Solution

The fourth proportional to 645,468.29, 890,777.79 and 358,982.22 is: 495,413.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,468.29 : 890,777.79 = 358,982.22 : x
  2. Step 2: Convert to fraction form
    645,468.29/890,777.79 = 358,982.22/x
  3. Step 3: Cross multiply
    645,468.29x = 890,777.79 × 358,982.22
  4. Step 4: Simplify right side
    645,468.29x = 319,773,388,580.89
  5. Step 5: Solve for x
    x = 319,773,388,580.89/645,468.29
  6. Step 6: Final answer
    x = 495,413.01

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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.