Finding the Fourth Proportional to 639,705,818.63, 959,558,727.95 and 155,031,626.63
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Solution
The fourth proportional to 639,705,818.63, 959,558,727.95 and 155,031,626.63 is: 232,547,439.94
Step by Step Solution
- Step 1: Write the proportion equation
639,705,818.63 : 959,558,727.95 = 155,031,626.63 : x - Step 2: Convert to fraction form
639,705,818.63/959,558,727.95 = 155,031,626.63/x - Step 3: Cross multiply
639,705,818.63x = 959,558,727.95 × 155,031,626.63 - Step 4: Simplify right side
639,705,818.63x = 148,761,950,435,529,216 - Step 5: Solve for x
x = 148,761,950,435,529,216/639,705,818.63 - Step 6: Final answer
x = 232,547,439.94
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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.