Finding the Fourth Proportional to 695,473,419.60, 1,043,210,129.40 and 686,403,493.20
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Solution
The fourth proportional to 695,473,419.60, 1,043,210,129.40 and 686,403,493.20 is: 1,029,605,239.80
Step by Step Solution
- Step 1: Write the proportion equation
695,473,419.60 : 1,043,210,129.40 = 686,403,493.20 : x - Step 2: Convert to fraction form
695,473,419.60/1,043,210,129.40 = 686,403,493.20/x - Step 3: Cross multiply
695,473,419.60x = 1,043,210,129.40 × 686,403,493.20 - Step 4: Simplify right side
695,473,419.60x = 716,063,076,961,784,064 - Step 5: Solve for x
x = 716,063,076,961,784,064/695,473,419.60 - Step 6: Final answer
x = 1,029,605,239.80
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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.