Home / 659,664,032.40-989,496,048.60-426,869,254.80

Finding the Fourth Proportional to 659,664,032.40, 989,496,048.60 and 426,869,254.80

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Solution

The fourth proportional to 659,664,032.40, 989,496,048.60 and 426,869,254.80 is: 640,303,882.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,664,032.40 : 989,496,048.60 = 426,869,254.80 : x
  2. Step 2: Convert to fraction form
    659,664,032.40/989,496,048.60 = 426,869,254.80/x
  3. Step 3: Cross multiply
    659,664,032.40x = 989,496,048.60 × 426,869,254.80
  4. Step 4: Simplify right side
    659,664,032.40x = 422,385,440,893,426,624
  5. Step 5: Solve for x
    x = 422,385,440,893,426,624/659,664,032.40
  6. Step 6: Final answer
    x = 640,303,882.20

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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.