Finding the Fourth Proportional to 698,495,918.40, 1,047,565,165.68 and 207,094,281.12
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Solution
The fourth proportional to 698,495,918.40, 1,047,565,165.68 and 207,094,281.12 is: 310,588,436.09
Step by Step Solution
- Step 1: Write the proportion equation
698,495,918.40 : 1,047,565,165.68 = 207,094,281.12 : x - Step 2: Convert to fraction form
698,495,918.40/1,047,565,165.68 = 207,094,281.12/x - Step 3: Cross multiply
698,495,918.40x = 1,047,565,165.68 × 207,094,281.12 - Step 4: Simplify right side
698,495,918.40x = 216,944,754,912,853,280 - Step 5: Solve for x
x = 216,944,754,912,853,280/698,495,918.40 - Step 6: Final answer
x = 310,588,436.09
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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.