Finding the Fourth Proportional to 830,489,676.60, 1,246,212,811.80 and 313,291,295.40
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Solution
The fourth proportional to 830,489,676.60, 1,246,212,811.80 and 313,291,295.40 is: 470,117,374.31
Step by Step Solution
- Step 1: Write the proportion equation
830,489,676.60 : 1,246,212,811.80 = 313,291,295.40 : x - Step 2: Convert to fraction form
830,489,676.60/1,246,212,811.80 = 313,291,295.40/x - Step 3: Cross multiply
830,489,676.60x = 1,246,212,811.80 × 313,291,295.40 - Step 4: Simplify right side
830,489,676.60x = 390,427,626,152,898,368 - Step 5: Solve for x
x = 390,427,626,152,898,368/830,489,676.60 - Step 6: Final answer
x = 470,117,374.31
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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.