Home / 819,072,380.70-1,228,608,571.05-512,962,364.70

Finding the Fourth Proportional to 819,072,380.70, 1,228,608,571.05 and 512,962,364.70

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Solution

The fourth proportional to 819,072,380.70, 1,228,608,571.05 and 512,962,364.70 is: 769,443,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,072,380.70 : 1,228,608,571.05 = 512,962,364.70 : x
  2. Step 2: Convert to fraction form
    819,072,380.70/1,228,608,571.05 = 512,962,364.70/x
  3. Step 3: Cross multiply
    819,072,380.70x = 1,228,608,571.05 × 512,962,364.70
  4. Step 4: Simplify right side
    819,072,380.70x = 630,229,957,896,495,872
  5. Step 5: Solve for x
    x = 630,229,957,896,495,872/819,072,380.70
  6. Step 6: Final answer
    x = 769,443,547.05

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Double scale
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Similar ratio
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1.5x scale

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.