Home / 819,072,313.20-1,228,608,469.80-528,834,668.40

Finding the Fourth Proportional to 819,072,313.20, 1,228,608,469.80 and 528,834,668.40

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Solution

The fourth proportional to 819,072,313.20, 1,228,608,469.80 and 528,834,668.40 is: 793,252,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,072,313.20 : 1,228,608,469.80 = 528,834,668.40 : x
  2. Step 2: Convert to fraction form
    819,072,313.20/1,228,608,469.80 = 528,834,668.40/x
  3. Step 3: Cross multiply
    819,072,313.20x = 1,228,608,469.80 × 528,834,668.40
  4. Step 4: Simplify right side
    819,072,313.20x = 649,730,752,720,114,304
  5. Step 5: Solve for x
    x = 649,730,752,720,114,304/819,072,313.20
  6. Step 6: Final answer
    x = 793,252,002.60

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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.