Finding the Fourth Proportional to 922,021,919.98, 1,272,394,056.87 and 498,635,572.03
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Solution
The fourth proportional to 922,021,919.98, 1,272,394,056.87 and 498,635,572.03 is: 688,119,148.41
Step by Step Solution
- Step 1: Write the proportion equation
922,021,919.98 : 1,272,394,056.87 = 498,635,572.03 : x - Step 2: Convert to fraction form
922,021,919.98/1,272,394,056.87 = 498,635,572.03/x - Step 3: Cross multiply
922,021,919.98x = 1,272,394,056.87 × 498,635,572.03 - Step 4: Simplify right side
922,021,919.98x = 634,460,938,394,944,768 - Step 5: Solve for x
x = 634,460,938,394,944,768/922,021,919.98 - Step 6: Final answer
x = 688,119,148.41
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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.