Home / 985,199.76-1,477,999.80-311,386.32

Finding the Fourth Proportional to 985,199.76, 1,477,999.80 and 311,386.32

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Solution

The fourth proportional to 985,199.76, 1,477,999.80 and 311,386.32 is: 467,142.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,199.76 : 1,477,999.80 = 311,386.32 : x
  2. Step 2: Convert to fraction form
    985,199.76/1,477,999.80 = 311,386.32/x
  3. Step 3: Cross multiply
    985,199.76x = 1,477,999.80 × 311,386.32
  4. Step 4: Simplify right side
    985,199.76x = 460,228,918,682.74
  5. Step 5: Solve for x
    x = 460,228,918,682.74/985,199.76
  6. Step 6: Final answer
    x = 467,142.74

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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.