Finding the Fourth Proportional to 684,845,332.68, 939,275,629.89 and 656,721,225.48
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Solution
The fourth proportional to 684,845,332.68, 939,275,629.89 and 656,721,225.48 is: 900,702,995.68
Step by Step Solution
- Step 1: Write the proportion equation
684,845,332.68 : 939,275,629.89 = 656,721,225.48 : x - Step 2: Convert to fraction form
684,845,332.68/939,275,629.89 = 656,721,225.48/x - Step 3: Cross multiply
684,845,332.68x = 939,275,629.89 × 656,721,225.48 - Step 4: Simplify right side
684,845,332.68x = 616,842,242,724,859,776 - Step 5: Solve for x
x = 616,842,242,724,859,776/684,845,332.68 - Step 6: Final answer
x = 900,702,995.68
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.