Home / 645,495.48-890,828.28-359,042.22

Finding the Fourth Proportional to 645,495.48, 890,828.28 and 359,042.22

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Solution

The fourth proportional to 645,495.48, 890,828.28 and 359,042.22 is: 495,503.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,495.48 : 890,828.28 = 359,042.22 : x
  2. Step 2: Convert to fraction form
    645,495.48/890,828.28 = 359,042.22/x
  3. Step 3: Cross multiply
    645,495.48x = 890,828.28 × 359,042.22
  4. Step 4: Simplify right side
    645,495.48x = 319,844,963,289.98
  5. Step 5: Solve for x
    x = 319,844,963,289.98/645,495.48
  6. Step 6: Final answer
    x = 495,503.03

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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.