Home / 698,665.60-1,047,998.40-621,251.20

Finding the Fourth Proportional to 698,665.60, 1,047,998.40 and 621,251.20

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Solution

The fourth proportional to 698,665.60, 1,047,998.40 and 621,251.20 is: 931,876.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,665.60 : 1,047,998.40 = 621,251.20 : x
  2. Step 2: Convert to fraction form
    698,665.60/1,047,998.40 = 621,251.20/x
  3. Step 3: Cross multiply
    698,665.60x = 1,047,998.40 × 621,251.20
  4. Step 4: Simplify right side
    698,665.60x = 651,070,263,598.08
  5. Step 5: Solve for x
    x = 651,070,263,598.08/698,665.60
  6. Step 6: Final answer
    x = 931,876.80

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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.