Finding the Fourth Proportional to 695,473,323.60, 1,043,209,985.40 and 686,403,397.20
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Solution
The fourth proportional to 695,473,323.60, 1,043,209,985.40 and 686,403,397.20 is: 1,029,605,095.80
Step by Step Solution
- Step 1: Write the proportion equation
695,473,323.60 : 1,043,209,985.40 = 686,403,397.20 : x - Step 2: Convert to fraction form
695,473,323.60/1,043,209,985.40 = 686,403,397.20/x - Step 3: Cross multiply
695,473,323.60x = 1,043,209,985.40 × 686,403,397.20 - Step 4: Simplify right side
695,473,323.60x = 716,062,877,971,522,432 - Step 5: Solve for x
x = 716,062,877,971,522,432/695,473,323.60 - Step 6: Final answer
x = 1,029,605,095.80
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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.