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Finding the Fourth Proportional to 449,323,870.80, 630,867,404.40 and 449,323,870.80

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Solution

The fourth proportional to 449,323,870.80, 630,867,404.40 and 449,323,870.80 is: 630,867,404.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,323,870.80 : 630,867,404.40 = 449,323,870.80 : x
  2. Step 2: Convert to fraction form
    449,323,870.80/630,867,404.40 = 449,323,870.80/x
  3. Step 3: Cross multiply
    449,323,870.80x = 630,867,404.40 × 449,323,870.80
  4. Step 4: Simplify right side
    449,323,870.80x = 283,463,784,106,556,960
  5. Step 5: Solve for x
    x = 283,463,784,106,556,960/449,323,870.80
  6. Step 6: Final answer
    x = 630,867,404.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.