Home / 645,313.05-890,495.43-358,826.98

Finding the Fourth Proportional to 645,313.05, 890,495.43 and 358,826.98

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Solution

The fourth proportional to 645,313.05, 890,495.43 and 358,826.98 is: 495,160.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,313.05 : 890,495.43 = 358,826.98 : x
  2. Step 2: Convert to fraction form
    645,313.05/890,495.43 = 358,826.98/x
  3. Step 3: Cross multiply
    645,313.05x = 890,495.43 × 358,826.98
  4. Step 4: Simplify right side
    645,313.05x = 319,533,785,618.22
  5. Step 5: Solve for x
    x = 319,533,785,618.22/645,313.05
  6. Step 6: Final answer
    x = 495,160.90

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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.