Home / 858,478,528.60-1,287,812,271.30-313,338,160.60

Finding the Fourth Proportional to 858,478,528.60, 1,287,812,271.30 and 313,338,160.60

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Solution

The fourth proportional to 858,478,528.60, 1,287,812,271.30 and 313,338,160.60 is: 470,041,724.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,478,528.60 : 1,287,812,271.30 = 313,338,160.60 : x
  2. Step 2: Convert to fraction form
    858,478,528.60/1,287,812,271.30 = 313,338,160.60/x
  3. Step 3: Cross multiply
    858,478,528.60x = 1,287,812,271.30 × 313,338,160.60
  4. Step 4: Simplify right side
    858,478,528.60x = 403,520,728,287,250,176
  5. Step 5: Solve for x
    x = 403,520,728,287,250,176/858,478,528.60
  6. Step 6: Final answer
    x = 470,041,724.80

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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.