Home / 1,111,386.99-1,666,887.30-312,478.94

Finding the Fourth Proportional to 1,111,386.99, 1,666,887.30 and 312,478.94

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Solution

The fourth proportional to 1,111,386.99, 1,666,887.30 and 312,478.94 is: 468,664.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,386.99 : 1,666,887.30 = 312,478.94 : x
  2. Step 2: Convert to fraction form
    1,111,386.99/1,666,887.30 = 312,478.94/x
  3. Step 3: Cross multiply
    1,111,386.99x = 1,666,887.30 × 312,478.94
  4. Step 4: Simplify right side
    1,111,386.99x = 520,867,168,269.03
  5. Step 5: Solve for x
    x = 520,867,168,269.03/1,111,386.99
  6. Step 6: Final answer
    x = 468,664.09

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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.