Home / 459,323,709.40-688,985,564.10-419,146,769.80

Finding the Fourth Proportional to 459,323,709.40, 688,985,564.10 and 419,146,769.80

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Solution

The fourth proportional to 459,323,709.40, 688,985,564.10 and 419,146,769.80 is: 628,720,154.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,323,709.40 : 688,985,564.10 = 419,146,769.80 : x
  2. Step 2: Convert to fraction form
    459,323,709.40/688,985,564.10 = 419,146,769.80/x
  3. Step 3: Cross multiply
    459,323,709.40x = 688,985,564.10 × 419,146,769.80
  4. Step 4: Simplify right side
    459,323,709.40x = 288,786,073,631,345,856
  5. Step 5: Solve for x
    x = 288,786,073,631,345,856/459,323,709.40
  6. Step 6: Final answer
    x = 628,720,154.70

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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.