Home / 289,788,940.70-434,683,411.05-261,123,494.30

Finding the Fourth Proportional to 289,788,940.70, 434,683,411.05 and 261,123,494.30

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Solution

The fourth proportional to 289,788,940.70, 434,683,411.05 and 261,123,494.30 is: 391,685,241.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,788,940.70 : 434,683,411.05 = 261,123,494.30 : x
  2. Step 2: Convert to fraction form
    289,788,940.70/434,683,411.05 = 261,123,494.30/x
  3. Step 3: Cross multiply
    289,788,940.70x = 434,683,411.05 × 261,123,494.30
  4. Step 4: Simplify right side
    289,788,940.70x = 113,506,051,207,619,248
  5. Step 5: Solve for x
    x = 113,506,051,207,619,248/289,788,940.70
  6. Step 6: Final answer
    x = 391,685,241.45

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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.