Home / 550,021.06-759,064.14-308,303.70

Finding the Fourth Proportional to 550,021.06, 759,064.14 and 308,303.70

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Solution

The fourth proportional to 550,021.06, 759,064.14 and 308,303.70 is: 425,478.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,021.06 : 759,064.14 = 308,303.70 : x
  2. Step 2: Convert to fraction form
    550,021.06/759,064.14 = 308,303.70/x
  3. Step 3: Cross multiply
    550,021.06x = 759,064.14 × 308,303.70
  4. Step 4: Simplify right side
    550,021.06x = 234,022,282,899.32
  5. Step 5: Solve for x
    x = 234,022,282,899.32/550,021.06
  6. Step 6: Final answer
    x = 425,478.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.