Finding the Fourth Proportional to 492,034,309.26, 679,021,518.42 and 272,031,907.02
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Solution
The fourth proportional to 492,034,309.26, 679,021,518.42 and 272,031,907.02 is: 375,411,866.79
Step by Step Solution
- Step 1: Write the proportion equation
492,034,309.26 : 679,021,518.42 = 272,031,907.02 : x - Step 2: Convert to fraction form
492,034,309.26/679,021,518.42 = 272,031,907.02/x - Step 3: Cross multiply
492,034,309.26x = 679,021,518.42 × 272,031,907.02 - Step 4: Simplify right side
492,034,309.26x = 184,715,518,563,408,640 - Step 5: Solve for x
x = 184,715,518,563,408,640/492,034,309.26 - Step 6: Final answer
x = 375,411,866.79
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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.