Finding the Fourth Proportional to 832,899,964.86, 1,249,490,405.99 and 280,070,979.09
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Solution
The fourth proportional to 832,899,964.86, 1,249,490,405.99 and 280,070,979.09 is: 420,153,699.28
Step by Step Solution
- Step 1: Write the proportion equation
832,899,964.86 : 1,249,490,405.99 = 280,070,979.09 : x - Step 2: Convert to fraction form
832,899,964.86/1,249,490,405.99 = 280,070,979.09/x - Step 3: Cross multiply
832,899,964.86x = 1,249,490,405.99 × 280,070,979.09 - Step 4: Simplify right side
832,899,964.86x = 349,946,001,369,881,088 - Step 5: Solve for x
x = 349,946,001,369,881,088/832,899,964.86 - Step 6: Final answer
x = 420,153,699.28
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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.