Finding the Fourth Proportional to 1,314,249,209.90, 1,971,636,876.36 and 485,207,891.12
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Solution
The fourth proportional to 1,314,249,209.90, 1,971,636,876.36 and 485,207,891.12 is: 727,908,956.40
Step by Step Solution
- Step 1: Write the proportion equation
1,314,249,209.90 : 1,971,636,876.36 = 485,207,891.12 : x - Step 2: Convert to fraction form
1,314,249,209.90/1,971,636,876.36 = 485,207,891.12/x - Step 3: Cross multiply
1,314,249,209.90x = 1,971,636,876.36 × 485,207,891.12 - Step 4: Simplify right side
1,314,249,209.90x = 956,653,770,833,059,712 - Step 5: Solve for x
x = 956,653,770,833,059,712/1,314,249,209.90 - Step 6: Final answer
x = 727,908,956.40
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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.