Finding the Fourth Proportional to 383,472,905.70, 575,209,358.55 and 319,699,985.70
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Solution
The fourth proportional to 383,472,905.70, 575,209,358.55 and 319,699,985.70 is: 479,549,978.55
Step by Step Solution
- Step 1: Write the proportion equation
383,472,905.70 : 575,209,358.55 = 319,699,985.70 : x - Step 2: Convert to fraction form
383,472,905.70/575,209,358.55 = 319,699,985.70/x - Step 3: Cross multiply
383,472,905.70x = 575,209,358.55 × 319,699,985.70 - Step 4: Simplify right side
383,472,905.70x = 183,894,423,702,941,152 - Step 5: Solve for x
x = 183,894,423,702,941,152/383,472,905.70 - Step 6: Final answer
x = 479,549,978.55
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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.