Finding the Fourth Proportional to 1,043,103,464.80, 1,564,655,197.20 and 315,997,698.40
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Solution
The fourth proportional to 1,043,103,464.80, 1,564,655,197.20 and 315,997,698.40 is: 473,996,547.60
Step by Step Solution
- Step 1: Write the proportion equation
1,043,103,464.80 : 1,564,655,197.20 = 315,997,698.40 : x - Step 2: Convert to fraction form
1,043,103,464.80/1,564,655,197.20 = 315,997,698.40/x - Step 3: Cross multiply
1,043,103,464.80x = 1,564,655,197.20 × 315,997,698.40 - Step 4: Simplify right side
1,043,103,464.80x = 494,427,441,104,798,080 - Step 5: Solve for x
x = 494,427,441,104,798,080/1,043,103,464.80 - Step 6: Final answer
x = 473,996,547.60
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Double scale
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Similar ratio
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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.