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Finding the Fourth Proportional to 562,139,086.19, 775,776,181.32 and 311,243,482.80

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Solution

The fourth proportional to 562,139,086.19, 775,776,181.32 and 311,243,482.80 is: 429,529,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    562,139,086.19 : 775,776,181.32 = 311,243,482.80 : x
  2. Step 2: Convert to fraction form
    562,139,086.19/775,776,181.32 = 311,243,482.80/x
  3. Step 3: Cross multiply
    562,139,086.19x = 775,776,181.32 × 311,243,482.80
  4. Step 4: Simplify right side
    562,139,086.19x = 241,455,280,547,321,120
  5. Step 5: Solve for x
    x = 241,455,280,547,321,120/562,139,086.19
  6. Step 6: Final answer
    x = 429,529,428.71

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.