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Finding the Fourth Proportional to 646,907,245.80, 970,360,868.70 and 577,035,220.20

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Solution

The fourth proportional to 646,907,245.80, 970,360,868.70 and 577,035,220.20 is: 865,552,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,907,245.80 : 970,360,868.70 = 577,035,220.20 : x
  2. Step 2: Convert to fraction form
    646,907,245.80/970,360,868.70 = 577,035,220.20/x
  3. Step 3: Cross multiply
    646,907,245.80x = 970,360,868.70 × 577,035,220.20
  4. Step 4: Simplify right side
    646,907,245.80x = 559,932,397,543,767,872
  5. Step 5: Solve for x
    x = 559,932,397,543,767,872/646,907,245.80
  6. Step 6: Final answer
    x = 865,552,830.30

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Double scale
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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.