Finding the Fourth Proportional to 2,989,506,952.60, 4,484,236,809.30 and 778,712,392.60
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Solution
The fourth proportional to 2,989,506,952.60, 4,484,236,809.30 and 778,712,392.60 is: 1,168,062,436.42
Step by Step Solution
- Step 1: Write the proportion equation
2,989,506,952.60 : 4,484,236,809.30 = 778,712,392.60 : x - Step 2: Convert to fraction form
2,989,506,952.60/4,484,236,809.30 = 778,712,392.60/x - Step 3: Cross multiply
2,989,506,952.60x = 4,484,236,809.30 × 778,712,392.60 - Step 4: Simplify right side
2,989,506,952.60x = 3,491,930,774,754,993,152 - Step 5: Solve for x
x = 3,491,930,774,754,993,152/2,989,506,952.60 - Step 6: Final answer
x = 1,168,062,436.42
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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.