Finding the Fourth Proportional to 663,554,308.40, 995,331,462.60 and 649,398,532.40
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Solution
The fourth proportional to 663,554,308.40, 995,331,462.60 and 649,398,532.40 is: 974,097,798.60
Step by Step Solution
- Step 1: Write the proportion equation
663,554,308.40 : 995,331,462.60 = 649,398,532.40 : x - Step 2: Convert to fraction form
663,554,308.40/995,331,462.60 = 649,398,532.40/x - Step 3: Cross multiply
663,554,308.40x = 995,331,462.60 × 649,398,532.40 - Step 4: Simplify right side
663,554,308.40x = 646,366,791,063,985,536 - Step 5: Solve for x
x = 646,366,791,063,985,536/663,554,308.40 - Step 6: Final answer
x = 974,097,798.60
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.