Finding the Fourth Proportional to 1,346,455,133.55, 1,857,966,471.68 and 781,829,645.31
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Solution
The fourth proportional to 1,346,455,133.55, 1,857,966,471.68 and 781,829,645.31 is: 1,078,842,682.06
Step by Step Solution
- Step 1: Write the proportion equation
1,346,455,133.55 : 1,857,966,471.68 = 781,829,645.31 : x - Step 2: Convert to fraction form
1,346,455,133.55/1,857,966,471.68 = 781,829,645.31/x - Step 3: Cross multiply
1,346,455,133.55x = 1,857,966,471.68 × 781,829,645.31 - Step 4: Simplify right side
1,346,455,133.55x = 1,452,613,267,547,537,152 - Step 5: Solve for x
x = 1,452,613,267,547,537,152/1,346,455,133.55 - Step 6: Final answer
x = 1,078,842,682.06
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.