Home / 912,291.40-1,368,728.70-313,636.60

Finding the Fourth Proportional to 912,291.40, 1,368,728.70 and 313,636.60

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Solution

The fourth proportional to 912,291.40, 1,368,728.70 and 313,636.60 is: 470,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,291.40 : 1,368,728.70 = 313,636.60 : x
  2. Step 2: Convert to fraction form
    912,291.40/1,368,728.70 = 313,636.60/x
  3. Step 3: Cross multiply
    912,291.40x = 1,368,728.70 × 313,636.60
  4. Step 4: Simplify right side
    912,291.40x = 429,283,415,790.42
  5. Step 5: Solve for x
    x = 429,283,415,790.42/912,291.40
  6. Step 6: Final answer
    x = 470,555.15

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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.