Home / 385,881,430.50-578,821,000.22-109,532,878.56

Finding the Fourth Proportional to 385,881,430.50, 578,821,000.22 and 109,532,878.56

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Solution

The fourth proportional to 385,881,430.50, 578,821,000.22 and 109,532,878.56 is: 164,298,992.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,881,430.50 : 578,821,000.22 = 109,532,878.56 : x
  2. Step 2: Convert to fraction form
    385,881,430.50/578,821,000.22 = 109,532,878.56/x
  3. Step 3: Cross multiply
    385,881,430.50x = 578,821,000.22 × 109,532,878.56
  4. Step 4: Simplify right side
    385,881,430.50x = 63,399,930,325,554,752
  5. Step 5: Solve for x
    x = 63,399,930,325,554,752/385,881,430.50
  6. Step 6: Final answer
    x = 164,298,992.68

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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.