Finding the Fourth Proportional to 1,130,638,781.80, 1,694,698,460.70 and 440,316,605.80
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Solution
The fourth proportional to 1,130,638,781.80, 1,694,698,460.70 and 440,316,605.80 is: 659,984,325.75
Step by Step Solution
- Step 1: Write the proportion equation
1,130,638,781.80 : 1,694,698,460.70 = 440,316,605.80 : x - Step 2: Convert to fraction form
1,130,638,781.80/1,694,698,460.70 = 440,316,605.80/x - Step 3: Cross multiply
1,130,638,781.80x = 1,694,698,460.70 × 440,316,605.80 - Step 4: Simplify right side
1,130,638,781.80x = 746,203,874,069,908,736 - Step 5: Solve for x
x = 746,203,874,069,908,736/1,130,638,781.80 - Step 6: Final answer
x = 659,984,325.75
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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.