Finding the Fourth Proportional to 568,927,219.20, 853,390,828.80 and 425,599,987.20
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Solution
The fourth proportional to 568,927,219.20, 853,390,828.80 and 425,599,987.20 is: 638,399,980.80
Step by Step Solution
- Step 1: Write the proportion equation
568,927,219.20 : 853,390,828.80 = 425,599,987.20 : x - Step 2: Convert to fraction form
568,927,219.20/853,390,828.80 = 425,599,987.20/x - Step 3: Cross multiply
568,927,219.20x = 853,390,828.80 × 425,599,987.20 - Step 4: Simplify right side
568,927,219.20x = 363,203,125,813,877,376 - Step 5: Solve for x
x = 363,203,125,813,877,376/568,927,219.20 - Step 6: Final answer
x = 638,399,980.80
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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.