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Finding the Fourth Proportional to 648,368.30, 971,313.15 and 348,749.30

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Solution

The fourth proportional to 648,368.30, 971,313.15 and 348,749.30 is: 522,457.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,368.30 : 971,313.15 = 348,749.30 : x
  2. Step 2: Convert to fraction form
    648,368.30/971,313.15 = 348,749.30/x
  3. Step 3: Cross multiply
    648,368.30x = 971,313.15 × 348,749.30
  4. Step 4: Simplify right side
    648,368.30x = 338,744,781,143.30
  5. Step 5: Solve for x
    x = 338,744,781,143.30/648,368.30
  6. Step 6: Final answer
    x = 522,457.35

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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.