Finding the Fourth Proportional to 472,392,497.70, 708,588,746.55 and 242,809,985.70
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Solution
The fourth proportional to 472,392,497.70, 708,588,746.55 and 242,809,985.70 is: 364,214,978.55
Step by Step Solution
- Step 1: Write the proportion equation
472,392,497.70 : 708,588,746.55 = 242,809,985.70 : x - Step 2: Convert to fraction form
472,392,497.70/708,588,746.55 = 242,809,985.70/x - Step 3: Cross multiply
472,392,497.70x = 708,588,746.55 × 242,809,985.70 - Step 4: Simplify right side
472,392,497.70x = 172,052,423,416,986,400 - Step 5: Solve for x
x = 172,052,423,416,986,400/472,392,497.70 - Step 6: Final answer
x = 364,214,978.55
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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.