Home / 313,727,020.40-470,590,530.60-279,289,643.60

Finding the Fourth Proportional to 313,727,020.40, 470,590,530.60 and 279,289,643.60

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Solution

The fourth proportional to 313,727,020.40, 470,590,530.60 and 279,289,643.60 is: 418,934,465.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,727,020.40 : 470,590,530.60 = 279,289,643.60 : x
  2. Step 2: Convert to fraction form
    313,727,020.40/470,590,530.60 = 279,289,643.60/x
  3. Step 3: Cross multiply
    313,727,020.40x = 470,590,530.60 × 279,289,643.60
  4. Step 4: Simplify right side
    313,727,020.40x = 131,431,061,572,808,912
  5. Step 5: Solve for x
    x = 131,431,061,572,808,912/313,727,020.40
  6. Step 6: Final answer
    x = 418,934,465.40

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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.