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Finding the Fourth Proportional to 1,315,580.06, 1,973,370.17 and 318,308.06

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Solution

The fourth proportional to 1,315,580.06, 1,973,370.17 and 318,308.06 is: 477,462.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315,580.06 : 1,973,370.17 = 318,308.06 : x
  2. Step 2: Convert to fraction form
    1,315,580.06/1,973,370.17 = 318,308.06/x
  3. Step 3: Cross multiply
    1,315,580.06x = 1,973,370.17 × 318,308.06
  4. Step 4: Simplify right side
    1,315,580.06x = 628,139,636,203.77
  5. Step 5: Solve for x
    x = 628,139,636,203.77/1,315,580.06
  6. Step 6: Final answer
    x = 477,462.11

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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.