Finding the Fourth Proportional to 2,878,692,794.80, 4,318,039,159.80 and 697,658,930.80
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Solution
The fourth proportional to 2,878,692,794.80, 4,318,039,159.80 and 697,658,930.80 is: 1,046,488,388.35
Step by Step Solution
- Step 1: Write the proportion equation
2,878,692,794.80 : 4,318,039,159.80 = 697,658,930.80 : x - Step 2: Convert to fraction form
2,878,692,794.80/4,318,039,159.80 = 697,658,930.80/x - Step 3: Cross multiply
2,878,692,794.80x = 4,318,039,159.80 × 697,658,930.80 - Step 4: Simplify right side
2,878,692,794.80x = 3,012,518,583,378,598,400 - Step 5: Solve for x
x = 3,012,518,583,378,598,400/2,878,692,794.80 - Step 6: Final answer
x = 1,046,488,388.35
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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.