Home / 668,840.20-1,003,260.30-313,890.10

Finding the Fourth Proportional to 668,840.20, 1,003,260.30 and 313,890.10

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Solution

The fourth proportional to 668,840.20, 1,003,260.30 and 313,890.10 is: 470,835.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,840.20 : 1,003,260.30 = 313,890.10 : x
  2. Step 2: Convert to fraction form
    668,840.20/1,003,260.30 = 313,890.10/x
  3. Step 3: Cross multiply
    668,840.20x = 1,003,260.30 × 313,890.10
  4. Step 4: Simplify right side
    668,840.20x = 314,913,475,893.03
  5. Step 5: Solve for x
    x = 314,913,475,893.03/668,840.20
  6. Step 6: Final answer
    x = 470,835.15

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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.