Finding the Fourth Proportional to 390,382,261.12, 585,574,759.68 and 99,249,415.20
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Solution
The fourth proportional to 390,382,261.12, 585,574,759.68 and 99,249,415.20 is: 148,874,470.60
Step by Step Solution
- Step 1: Write the proportion equation
390,382,261.12 : 585,574,759.68 = 99,249,415.20 : x - Step 2: Convert to fraction form
390,382,261.12/585,574,759.68 = 99,249,415.20/x - Step 3: Cross multiply
390,382,261.12x = 585,574,759.68 × 99,249,415.20 - Step 4: Simplify right side
390,382,261.12x = 58,117,952,454,120,536 - Step 5: Solve for x
x = 58,117,952,454,120,536/390,382,261.12 - Step 6: Final answer
x = 148,874,470.60
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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.