Finding the Fourth Proportional to 939,697,948.80, 1,409,546,923.20 and 395,502,364.80
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Solution
The fourth proportional to 939,697,948.80, 1,409,546,923.20 and 395,502,364.80 is: 593,253,547.20
Step by Step Solution
- Step 1: Write the proportion equation
939,697,948.80 : 1,409,546,923.20 = 395,502,364.80 : x - Step 2: Convert to fraction form
939,697,948.80/1,409,546,923.20 = 395,502,364.80/x - Step 3: Cross multiply
939,697,948.80x = 1,409,546,923.20 × 395,502,364.80 - Step 4: Simplify right side
939,697,948.80x = 557,479,141,422,164,032 - Step 5: Solve for x
x = 557,479,141,422,164,032/939,697,948.80 - Step 6: Final answer
x = 593,253,547.20
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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.