Finding the Fourth Proportional to 894,203,515.38, 1,234,000,908.12 and 497,717,969.70
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Solution
The fourth proportional to 894,203,515.38, 1,234,000,908.12 and 497,717,969.70 is: 686,850,829.85
Step by Step Solution
- Step 1: Write the proportion equation
894,203,515.38 : 1,234,000,908.12 = 497,717,969.70 : x - Step 2: Convert to fraction form
894,203,515.38/1,234,000,908.12 = 497,717,969.70/x - Step 3: Cross multiply
894,203,515.38x = 1,234,000,908.12 × 497,717,969.70 - Step 4: Simplify right side
894,203,515.38x = 614,184,426,597,442,560 - Step 5: Solve for x
x = 614,184,426,597,442,560/894,203,515.38 - Step 6: Final answer
x = 686,850,829.85
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Double scale
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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.