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Finding the Fourth Proportional to 821,609,975, 1,133,943,461.16 and 520,223,303

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Solution

The fourth proportional to 821,609,975, 1,133,943,461.16 and 520,223,303 is: 717,985,212.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,609,975 : 1,133,943,461.16 = 520,223,303 : x
  2. Step 2: Convert to fraction form
    821,609,975/1,133,943,461.16 = 520,223,303/x
  3. Step 3: Cross multiply
    821,609,975x = 1,133,943,461.16 × 520,223,303
  4. Step 4: Simplify right side
    821,609,975x = 589,903,812,779,907,456
  5. Step 5: Solve for x
    x = 589,903,812,779,907,456/821,609,975
  6. Step 6: Final answer
    x = 717,985,212.85

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Why These Related Problems?

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