Finding the Fourth Proportional to 1,303,878,345.90, 1,955,145,672.45 and 485,569,430.70
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Solution
The fourth proportional to 1,303,878,345.90, 1,955,145,672.45 and 485,569,430.70 is: 728,103,947.80
Step by Step Solution
- Step 1: Write the proportion equation
1,303,878,345.90 : 1,955,145,672.45 = 485,569,430.70 : x - Step 2: Convert to fraction form
1,303,878,345.90/1,955,145,672.45 = 485,569,430.70/x - Step 3: Cross multiply
1,303,878,345.90x = 1,955,145,672.45 × 485,569,430.70 - Step 4: Simplify right side
1,303,878,345.90x = 949,358,971,107,115,136 - Step 5: Solve for x
x = 949,358,971,107,115,136/1,303,878,345.90 - Step 6: Final answer
x = 728,103,947.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.