Finding the Fourth Proportional to 853,884,997.08, 1,178,362,303.98 and 462,744,421.08
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Solution
The fourth proportional to 853,884,997.08, 1,178,362,303.98 and 462,744,421.08 is: 638,587,847.36
Step by Step Solution
- Step 1: Write the proportion equation
853,884,997.08 : 1,178,362,303.98 = 462,744,421.08 : x - Step 2: Convert to fraction form
853,884,997.08/1,178,362,303.98 = 462,744,421.08/x - Step 3: Cross multiply
853,884,997.08x = 1,178,362,303.98 × 462,744,421.08 - Step 4: Simplify right side
853,884,997.08x = 545,280,582,177,720,064 - Step 5: Solve for x
x = 545,280,582,177,720,064/853,884,997.08 - Step 6: Final answer
x = 638,587,847.36
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Double scale
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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.