Finding the Fourth Proportional to 708,388,109.12, 977,889,057.14 and 457,614,774.84
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Solution
The fourth proportional to 708,388,109.12, 977,889,057.14 and 457,614,774.84 is: 631,710,886.93
Step by Step Solution
- Step 1: Write the proportion equation
708,388,109.12 : 977,889,057.14 = 457,614,774.84 : x - Step 2: Convert to fraction form
708,388,109.12/977,889,057.14 = 457,614,774.84/x - Step 3: Cross multiply
708,388,109.12x = 977,889,057.14 × 457,614,774.84 - Step 4: Simplify right side
708,388,109.12x = 447,496,480,701,620,992 - Step 5: Solve for x
x = 447,496,480,701,620,992/708,388,109.12 - Step 6: Final answer
x = 631,710,886.93
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.