Home / 858,478,530.10-1,287,812,273.55-313,338,162.10

Finding the Fourth Proportional to 858,478,530.10, 1,287,812,273.55 and 313,338,162.10

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Solution

The fourth proportional to 858,478,530.10, 1,287,812,273.55 and 313,338,162.10 is: 470,041,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,478,530.10 : 1,287,812,273.55 = 313,338,162.10 : x
  2. Step 2: Convert to fraction form
    858,478,530.10/1,287,812,273.55 = 313,338,162.10/x
  3. Step 3: Cross multiply
    858,478,530.10x = 1,287,812,273.55 × 313,338,162.10
  4. Step 4: Simplify right side
    858,478,530.10x = 403,520,730,923,979,456
  5. Step 5: Solve for x
    x = 403,520,730,923,979,456/858,478,530.10
  6. Step 6: Final answer
    x = 470,041,727.05

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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.