Finding the Fourth Proportional to 680,339,248.12, 939,158,373.36 and 457,450,124.92
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Solution
The fourth proportional to 680,339,248.12, 939,158,373.36 and 457,450,124.92 is: 631,476,305.98
Step by Step Solution
- Step 1: Write the proportion equation
680,339,248.12 : 939,158,373.36 = 457,450,124.92 : x - Step 2: Convert to fraction form
680,339,248.12/939,158,373.36 = 457,450,124.92/x - Step 3: Cross multiply
680,339,248.12x = 939,158,373.36 × 457,450,124.92 - Step 4: Simplify right side
680,339,248.12x = 429,618,115,213,196,032 - Step 5: Solve for x
x = 429,618,115,213,196,032/680,339,248.12 - Step 6: Final answer
x = 631,476,305.98
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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.