Finding the Fourth Proportional to 869,130,090.30, 1,303,695,135.45 and 772,384,208.70
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Solution
The fourth proportional to 869,130,090.30, 1,303,695,135.45 and 772,384,208.70 is: 1,158,576,313.05
Step by Step Solution
- Step 1: Write the proportion equation
869,130,090.30 : 1,303,695,135.45 = 772,384,208.70 : x - Step 2: Convert to fraction form
869,130,090.30/1,303,695,135.45 = 772,384,208.70/x - Step 3: Cross multiply
869,130,090.30x = 1,303,695,135.45 × 772,384,208.70 - Step 4: Simplify right side
869,130,090.30x = 1,006,953,535,580,587,648 - Step 5: Solve for x
x = 1,006,953,535,580,587,648/869,130,090.30 - Step 6: Final answer
x = 1,158,576,313.05
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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.