Home / 421,688.16-581,583.24-300,790.80

Finding the Fourth Proportional to 421,688.16, 581,583.24 and 300,790.80

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Solution

The fourth proportional to 421,688.16, 581,583.24 and 300,790.80 is: 414,844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,688.16 : 581,583.24 = 300,790.80 : x
  2. Step 2: Convert to fraction form
    421,688.16/581,583.24 = 300,790.80/x
  3. Step 3: Cross multiply
    421,688.16x = 581,583.24 × 300,790.80
  4. Step 4: Simplify right side
    421,688.16x = 174,934,888,026.19
  5. Step 5: Solve for x
    x = 174,934,888,026.19/421,688.16
  6. Step 6: Final answer
    x = 414,844.20

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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.