Finding the Fourth Proportional to 637,972,473.12, 956,958,710.21 and 153,298,281.12
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Solution
The fourth proportional to 637,972,473.12, 956,958,710.21 and 153,298,281.12 is: 229,947,421.81
Step by Step Solution
- Step 1: Write the proportion equation
637,972,473.12 : 956,958,710.21 = 153,298,281.12 : x - Step 2: Convert to fraction form
637,972,473.12/956,958,710.21 = 153,298,281.12/x - Step 3: Cross multiply
637,972,473.12x = 956,958,710.21 × 153,298,281.12 - Step 4: Simplify right side
637,972,473.12x = 146,700,125,378,005,216 - Step 5: Solve for x
x = 146,700,125,378,005,216/637,972,473.12 - Step 6: Final answer
x = 229,947,421.81
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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.