Finding the Fourth Proportional to 856,221,656.70, 1,181,683,904.68 and 479,979,862.68
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Solution
The fourth proportional to 856,221,656.70, 1,181,683,904.68 and 479,979,862.68 is: 662,427,157.57
Step by Step Solution
- Step 1: Write the proportion equation
856,221,656.70 : 1,181,683,904.68 = 479,979,862.68 : x - Step 2: Convert to fraction form
856,221,656.70/1,181,683,904.68 = 479,979,862.68/x - Step 3: Cross multiply
856,221,656.70x = 1,181,683,904.68 × 479,979,862.68 - Step 4: Simplify right side
856,221,656.70x = 567,184,478,299,472,640 - Step 5: Solve for x
x = 567,184,478,299,472,640/856,221,656.70 - Step 6: Final answer
x = 662,427,157.57
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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.