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Finding the Fourth Proportional to 843,419.40, 1,265,420.70 and 814,259.40

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Solution

The fourth proportional to 843,419.40, 1,265,420.70 and 814,259.40 is: 1,221,670.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,419.40 : 1,265,420.70 = 814,259.40 : x
  2. Step 2: Convert to fraction form
    843,419.40/1,265,420.70 = 814,259.40/x
  3. Step 3: Cross multiply
    843,419.40x = 1,265,420.70 × 814,259.40
  4. Step 4: Simplify right side
    843,419.40x = 1,030,380,699,929.58
  5. Step 5: Solve for x
    x = 1,030,380,699,929.58/843,419.40
  6. Step 6: Final answer
    x = 1,221,670.62

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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.