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Finding the Fourth Proportional to 648,365.80, 971,309.40 and 348,746.80

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Solution

The fourth proportional to 648,365.80, 971,309.40 and 348,746.80 is: 522,453.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,365.80 : 971,309.40 = 348,746.80 : x
  2. Step 2: Convert to fraction form
    648,365.80/971,309.40 = 348,746.80/x
  3. Step 3: Cross multiply
    648,365.80x = 971,309.40 × 348,746.80
  4. Step 4: Simplify right side
    648,365.80x = 338,741,045,059.92
  5. Step 5: Solve for x
    x = 338,741,045,059.92/648,365.80
  6. Step 6: Final answer
    x = 522,453.60

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1.5x scale

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.