Finding the Fourth Proportional to 817,502,917.02, 1,127,985,615.99 and 469,755,220.38
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Solution
The fourth proportional to 817,502,917.02, 1,127,985,615.99 and 469,755,220.38 is: 648,165,432.31
Step by Step Solution
- Step 1: Write the proportion equation
817,502,917.02 : 1,127,985,615.99 = 469,755,220.38 : x - Step 2: Convert to fraction form
817,502,917.02/1,127,985,615.99 = 469,755,220.38/x - Step 3: Cross multiply
817,502,917.02x = 1,127,985,615.99 × 469,755,220.38 - Step 4: Simplify right side
817,502,917.02x = 529,877,131,624,852,480 - Step 5: Solve for x
x = 529,877,131,624,852,480/817,502,917.02 - Step 6: Final answer
x = 648,165,432.31
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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.