Finding the Fourth Proportional to 872,934,242.44, 1,206,225,032.18 and 621,602,294.08
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Solution
The fourth proportional to 872,934,242.44, 1,206,225,032.18 and 621,602,294.08 is: 858,933,251.47
Step by Step Solution
- Step 1: Write the proportion equation
872,934,242.44 : 1,206,225,032.18 = 621,602,294.08 : x - Step 2: Convert to fraction form
872,934,242.44/1,206,225,032.18 = 621,602,294.08/x - Step 3: Cross multiply
872,934,242.44x = 1,206,225,032.18 × 621,602,294.08 - Step 4: Simplify right side
872,934,242.44x = 749,792,247,179,809,920 - Step 5: Solve for x
x = 749,792,247,179,809,920/872,934,242.44 - Step 6: Final answer
x = 858,933,251.47
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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.