Finding the Fourth Proportional to 813,447,289.08, 1,122,557,982.12 and 442,169,320.32
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Solution
The fourth proportional to 813,447,289.08, 1,122,557,982.12 and 442,169,320.32 is: 610,194,055.15
Step by Step Solution
- Step 1: Write the proportion equation
813,447,289.08 : 1,122,557,982.12 = 442,169,320.32 : x - Step 2: Convert to fraction form
813,447,289.08/1,122,557,982.12 = 442,169,320.32/x - Step 3: Cross multiply
813,447,289.08x = 1,122,557,982.12 × 442,169,320.32 - Step 4: Simplify right side
813,447,289.08x = 496,360,699,973,791,040 - Step 5: Solve for x
x = 496,360,699,973,791,040/813,447,289.08 - Step 6: Final answer
x = 610,194,055.15
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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.