Home / 810,420.60-1,213,881.30-526,985.40

Finding the Fourth Proportional to 810,420.60, 1,213,881.30 and 526,985.40

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Solution

The fourth proportional to 810,420.60, 1,213,881.30 and 526,985.40 is: 789,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,420.60 : 1,213,881.30 = 526,985.40 : x
  2. Step 2: Convert to fraction form
    810,420.60/1,213,881.30 = 526,985.40/x
  3. Step 3: Cross multiply
    810,420.60x = 1,213,881.30 × 526,985.40
  4. Step 4: Simplify right side
    810,420.60x = 639,697,722,433.02
  5. Step 5: Solve for x
    x = 639,697,722,433.02/810,420.60
  6. Step 6: Final answer
    x = 789,340.40

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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.