Home / 648,212.60-972,318.90-435,636.20

Finding the Fourth Proportional to 648,212.60, 972,318.90 and 435,636.20

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Solution

The fourth proportional to 648,212.60, 972,318.90 and 435,636.20 is: 653,454.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,212.60 : 972,318.90 = 435,636.20 : x
  2. Step 2: Convert to fraction form
    648,212.60/972,318.90 = 435,636.20/x
  3. Step 3: Cross multiply
    648,212.60x = 972,318.90 × 435,636.20
  4. Step 4: Simplify right side
    648,212.60x = 423,577,310,784.18
  5. Step 5: Solve for x
    x = 423,577,310,784.18/648,212.60
  6. Step 6: Final answer
    x = 653,454.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.