Finding the Fourth Proportional to 665,323,688.18, 918,429,395.04 and 414,551,979.07
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Solution
The fourth proportional to 665,323,688.18, 918,429,395.04 and 414,551,979.07 is: 572,257,880.06
Step by Step Solution
- Step 1: Write the proportion equation
665,323,688.18 : 918,429,395.04 = 414,551,979.07 : x - Step 2: Convert to fraction form
665,323,688.18/918,429,395.04 = 414,551,979.07/x - Step 3: Cross multiply
665,323,688.18x = 918,429,395.04 × 414,551,979.07 - Step 4: Simplify right side
665,323,688.18x = 380,736,723,347,598,720 - Step 5: Solve for x
x = 380,736,723,347,598,720/665,323,688.18 - Step 6: Final answer
x = 572,257,880.06
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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.