Finding the Fourth Proportional to 907,128,218.70, 1,360,692,328.05 and 447,963,194.70
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Solution
The fourth proportional to 907,128,218.70, 1,360,692,328.05 and 447,963,194.70 is: 671,944,792.05
Step by Step Solution
- Step 1: Write the proportion equation
907,128,218.70 : 1,360,692,328.05 = 447,963,194.70 : x - Step 2: Convert to fraction form
907,128,218.70/1,360,692,328.05 = 447,963,194.70/x - Step 3: Cross multiply
907,128,218.70x = 1,360,692,328.05 × 447,963,194.70 - Step 4: Simplify right side
907,128,218.70x = 609,540,082,277,058,432 - Step 5: Solve for x
x = 609,540,082,277,058,432/907,128,218.70 - Step 6: Final answer
x = 671,944,792.05
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Double scale
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Similar ratio
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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.