Finding the Fourth Proportional to 651,924,905.70, 977,887,358.55 and 215,292,980.10
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Solution
The fourth proportional to 651,924,905.70, 977,887,358.55 and 215,292,980.10 is: 322,939,470.15
Step by Step Solution
- Step 1: Write the proportion equation
651,924,905.70 : 977,887,358.55 = 215,292,980.10 : x - Step 2: Convert to fraction form
651,924,905.70/977,887,358.55 = 215,292,980.10/x - Step 3: Cross multiply
651,924,905.70x = 977,887,358.55 × 215,292,980.10 - Step 4: Simplify right side
651,924,905.70x = 210,532,283,624,346,688 - Step 5: Solve for x
x = 210,532,283,624,346,688/651,924,905.70 - Step 6: Final answer
x = 322,939,470.15
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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.