Finding the Fourth Proportional to 1,866,249,621.80, 2,799,374,432.70 and 639,010,197.80
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Solution
The fourth proportional to 1,866,249,621.80, 2,799,374,432.70 and 639,010,197.80 is: 958,515,296.70
Step by Step Solution
- Step 1: Write the proportion equation
1,866,249,621.80 : 2,799,374,432.70 = 639,010,197.80 : x - Step 2: Convert to fraction form
1,866,249,621.80/2,799,374,432.70 = 639,010,197.80/x - Step 3: Cross multiply
1,866,249,621.80x = 2,799,374,432.70 × 639,010,197.80 - Step 4: Simplify right side
1,866,249,621.80x = 1,788,828,809,955,889,408 - Step 5: Solve for x
x = 1,788,828,809,955,889,408/1,866,249,621.80 - Step 6: Final answer
x = 958,515,296.70
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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.