Home / 668,736,908.40-1,003,105,362.60-505,478,233.20

Finding the Fourth Proportional to 668,736,908.40, 1,003,105,362.60 and 505,478,233.20

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Solution

The fourth proportional to 668,736,908.40, 1,003,105,362.60 and 505,478,233.20 is: 758,217,349.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,736,908.40 : 1,003,105,362.60 = 505,478,233.20 : x
  2. Step 2: Convert to fraction form
    668,736,908.40/1,003,105,362.60 = 505,478,233.20/x
  3. Step 3: Cross multiply
    668,736,908.40x = 1,003,105,362.60 × 505,478,233.20
  4. Step 4: Simplify right side
    668,736,908.40x = 507,047,926,400,493,376
  5. Step 5: Solve for x
    x = 507,047,926,400,493,376/668,736,908.40
  6. Step 6: Final answer
    x = 758,217,349.80

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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.