Finding the Fourth Proportional to 1,238,311,473.61, 1,708,818,258.21 and 673,798,572.13
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Solution
The fourth proportional to 1,238,311,473.61, 1,708,818,258.21 and 673,798,572.13 is: 929,813,965.99
Step by Step Solution
- Step 1: Write the proportion equation
1,238,311,473.61 : 1,708,818,258.21 = 673,798,572.13 : x - Step 2: Convert to fraction form
1,238,311,473.61/1,708,818,258.21 = 673,798,572.13/x - Step 3: Cross multiply
1,238,311,473.61x = 1,708,818,258.21 × 673,798,572.13 - Step 4: Simplify right side
1,238,311,473.61x = 1,151,399,302,403,027,584 - Step 5: Solve for x
x = 1,151,399,302,403,027,584/1,238,311,473.61 - Step 6: Final answer
x = 929,813,965.99
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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.