Finding the Fourth Proportional to 915,403,688.28, 1,263,242,207.34 and 497,726,491.68
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Solution
The fourth proportional to 915,403,688.28, 1,263,242,207.34 and 497,726,491.68 is: 686,854,466.56
Step by Step Solution
- Step 1: Write the proportion equation
915,403,688.28 : 1,263,242,207.34 = 497,726,491.68 : x - Step 2: Convert to fraction form
915,403,688.28/1,263,242,207.34 = 497,726,491.68/x - Step 3: Cross multiply
915,403,688.28x = 1,263,242,207.34 × 497,726,491.68 - Step 4: Simplify right side
915,403,688.28x = 628,749,112,001,437,312 - Step 5: Solve for x
x = 628,749,112,001,437,312/915,403,688.28 - Step 6: Final answer
x = 686,854,466.56
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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.