Finding the Fourth Proportional to 516,163,370.81, 712,390,878.17 and 304,521,943.68
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Solution
The fourth proportional to 516,163,370.81, 712,390,878.17 and 304,521,943.68 is: 420,290,681.50
Step by Step Solution
- Step 1: Write the proportion equation
516,163,370.81 : 712,390,878.17 = 304,521,943.68 : x - Step 2: Convert to fraction form
516,163,370.81/712,390,878.17 = 304,521,943.68/x - Step 3: Cross multiply
516,163,370.81x = 712,390,878.17 × 304,521,943.68 - Step 4: Simplify right side
516,163,370.81x = 216,938,654,880,991,808 - Step 5: Solve for x
x = 216,938,654,880,991,808/516,163,370.81 - Step 6: Final answer
x = 420,290,681.50
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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.