Home / 690,813.60-1,036,220.40-410,186.40

Finding the Fourth Proportional to 690,813.60, 1,036,220.40 and 410,186.40

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Solution

The fourth proportional to 690,813.60, 1,036,220.40 and 410,186.40 is: 615,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,813.60 : 1,036,220.40 = 410,186.40 : x
  2. Step 2: Convert to fraction form
    690,813.60/1,036,220.40 = 410,186.40/x
  3. Step 3: Cross multiply
    690,813.60x = 1,036,220.40 × 410,186.40
  4. Step 4: Simplify right side
    690,813.60x = 425,043,515,482.56
  5. Step 5: Solve for x
    x = 425,043,515,482.56/690,813.60
  6. Step 6: Final answer
    x = 615,279.60

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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.