Home / 645,317.33-890,538.65-358,831.27

Finding the Fourth Proportional to 645,317.33, 890,538.65 and 358,831.27

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Solution

The fourth proportional to 645,317.33, 890,538.65 and 358,831.27 is: 495,187.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,317.33 : 890,538.65 = 358,831.27 : x
  2. Step 2: Convert to fraction form
    645,317.33/890,538.65 = 358,831.27/x
  3. Step 3: Cross multiply
    645,317.33x = 890,538.65 × 358,831.27
  4. Step 4: Simplify right side
    645,317.33x = 319,553,112,437.37
  5. Step 5: Solve for x
    x = 319,553,112,437.37/645,317.33
  6. Step 6: Final answer
    x = 495,187.56

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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.