Finding the Fourth Proportional to 42,830,808.18, 64,246,210.65 and 12,538,671.18
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Solution
The fourth proportional to 42,830,808.18, 64,246,210.65 and 12,538,671.18 is: 18,808,006.30
Step by Step Solution
- Step 1: Write the proportion equation
42,830,808.18 : 64,246,210.65 = 12,538,671.18 : x - Step 2: Convert to fraction form
42,830,808.18/64,246,210.65 = 12,538,671.18/x - Step 3: Cross multiply
42,830,808.18x = 64,246,210.65 × 12,538,671.18 - Step 4: Simplify right side
42,830,808.18x = 805,562,109,901,364 - Step 5: Solve for x
x = 805,562,109,901,364/42,830,808.18 - Step 6: Final answer
x = 18,808,006.30
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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.