Home / 686,881.40-1,030,322.10-313,633.40

Finding the Fourth Proportional to 686,881.40, 1,030,322.10 and 313,633.40

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Solution

The fourth proportional to 686,881.40, 1,030,322.10 and 313,633.40 is: 470,450.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,881.40 : 1,030,322.10 = 313,633.40 : x
  2. Step 2: Convert to fraction form
    686,881.40/1,030,322.10 = 313,633.40/x
  3. Step 3: Cross multiply
    686,881.40x = 1,030,322.10 × 313,633.40
  4. Step 4: Simplify right side
    686,881.40x = 323,143,423,318.14
  5. Step 5: Solve for x
    x = 323,143,423,318.14/686,881.40
  6. Step 6: Final answer
    x = 470,450.10

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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.