Finding the Fourth Proportional to 1,345,221,971.12, 1,856,407,475.95 and 750,506,547.74
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Solution
The fourth proportional to 1,345,221,971.12, 1,856,407,475.95 and 750,506,547.74 is: 1,035,699,680.70
Step by Step Solution
- Step 1: Write the proportion equation
1,345,221,971.12 : 1,856,407,475.95 = 750,506,547.74 : x - Step 2: Convert to fraction form
1,345,221,971.12/1,856,407,475.95 = 750,506,547.74/x - Step 3: Cross multiply
1,345,221,971.12x = 1,856,407,475.95 × 750,506,547.74 - Step 4: Simplify right side
1,345,221,971.12x = 1,393,245,965,962,803,200 - Step 5: Solve for x
x = 1,393,245,965,962,803,200/1,345,221,971.12 - Step 6: Final answer
x = 1,035,699,680.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.