Home / 864,389.40-1,296,000.90-415,325.40

Finding the Fourth Proportional to 864,389.40, 1,296,000.90 and 415,325.40

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Solution

The fourth proportional to 864,389.40, 1,296,000.90 and 415,325.40 is: 622,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,389.40 : 1,296,000.90 = 415,325.40 : x
  2. Step 2: Convert to fraction form
    864,389.40/1,296,000.90 = 415,325.40/x
  3. Step 3: Cross multiply
    864,389.40x = 1,296,000.90 × 415,325.40
  4. Step 4: Simplify right side
    864,389.40x = 538,262,092,192.86
  5. Step 5: Solve for x
    x = 538,262,092,192.86/864,389.40
  6. Step 6: Final answer
    x = 622,707.88

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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.