Finding the Fourth Proportional to 805,130,878.60, 1,207,696,317.90 and 455,017,547.80
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Solution
The fourth proportional to 805,130,878.60, 1,207,696,317.90 and 455,017,547.80 is: 682,526,321.70
Step by Step Solution
- Step 1: Write the proportion equation
805,130,878.60 : 1,207,696,317.90 = 455,017,547.80 : x - Step 2: Convert to fraction form
805,130,878.60/1,207,696,317.90 = 455,017,547.80/x - Step 3: Cross multiply
805,130,878.60x = 1,207,696,317.90 × 455,017,547.80 - Step 4: Simplify right side
805,130,878.60x = 549,523,017,057,947,328 - Step 5: Solve for x
x = 549,523,017,057,947,328/805,130,878.60 - Step 6: Final answer
x = 682,526,321.70
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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.