Home / 926,440.20-1,390,178.70-393,870.60

Finding the Fourth Proportional to 926,440.20, 1,390,178.70 and 393,870.60

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Solution

The fourth proportional to 926,440.20, 1,390,178.70 and 393,870.60 is: 591,026.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,440.20 : 1,390,178.70 = 393,870.60 : x
  2. Step 2: Convert to fraction form
    926,440.20/1,390,178.70 = 393,870.60/x
  3. Step 3: Cross multiply
    926,440.20x = 1,390,178.70 × 393,870.60
  4. Step 4: Simplify right side
    926,440.20x = 547,550,518,676.22
  5. Step 5: Solve for x
    x = 547,550,518,676.22/926,440.20
  6. Step 6: Final answer
    x = 591,026.29

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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.