Finding the Fourth Proportional to 646,569,313.80, 969,853,970.70 and 283,772,257.80
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Solution
The fourth proportional to 646,569,313.80, 969,853,970.70 and 283,772,257.80 is: 425,658,386.70
Step by Step Solution
- Step 1: Write the proportion equation
646,569,313.80 : 969,853,970.70 = 283,772,257.80 : x - Step 2: Convert to fraction form
646,569,313.80/969,853,970.70 = 283,772,257.80/x - Step 3: Cross multiply
646,569,313.80x = 969,853,970.70 × 283,772,257.80 - Step 4: Simplify right side
646,569,313.80x = 275,217,651,001,834,080 - Step 5: Solve for x
x = 275,217,651,001,834,080/646,569,313.80 - Step 6: Final answer
x = 425,658,386.70
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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.