Finding the Fourth Proportional to 472,566,487.80, 708,849,731.70 and 408,865,495.80
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Solution
The fourth proportional to 472,566,487.80, 708,849,731.70 and 408,865,495.80 is: 613,298,243.70
Step by Step Solution
- Step 1: Write the proportion equation
472,566,487.80 : 708,849,731.70 = 408,865,495.80 : x - Step 2: Convert to fraction form
472,566,487.80/708,849,731.70 = 408,865,495.80/x - Step 3: Cross multiply
472,566,487.80x = 708,849,731.70 × 408,865,495.80 - Step 4: Simplify right side
472,566,487.80x = 289,824,196,999,217,536 - Step 5: Solve for x
x = 289,824,196,999,217,536/472,566,487.80 - Step 6: Final answer
x = 613,298,243.70
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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.