Finding the Fourth Proportional to 753,003,122.84, 1,038,821,971.51 and 470,254,688.09
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Solution
The fourth proportional to 753,003,122.84, 1,038,821,971.51 and 470,254,688.09 is: 648,750,167.66
Step by Step Solution
- Step 1: Write the proportion equation
753,003,122.84 : 1,038,821,971.51 = 470,254,688.09 : x - Step 2: Convert to fraction form
753,003,122.84/1,038,821,971.51 = 470,254,688.09/x - Step 3: Cross multiply
753,003,122.84x = 1,038,821,971.51 × 470,254,688.09 - Step 4: Simplify right side
753,003,122.84x = 488,510,902,193,473,856 - Step 5: Solve for x
x = 488,510,902,193,473,856/753,003,122.84 - Step 6: Final answer
x = 648,750,167.66
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.