Home / 1,217,941,770.40-1,680,761,264.94-661,024,817.44

Finding the Fourth Proportional to 1,217,941,770.40, 1,680,761,264.94 and 661,024,817.44

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Solution

The fourth proportional to 1,217,941,770.40, 1,680,761,264.94 and 661,024,817.44 is: 912,215,128.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,941,770.40 : 1,680,761,264.94 = 661,024,817.44 : x
  2. Step 2: Convert to fraction form
    1,217,941,770.40/1,680,761,264.94 = 661,024,817.44/x
  3. Step 3: Cross multiply
    1,217,941,770.40x = 1,680,761,264.94 × 661,024,817.44
  4. Step 4: Simplify right side
    1,217,941,770.40x = 1,111,024,908,317,187,072
  5. Step 5: Solve for x
    x = 1,111,024,908,317,187,072/1,217,941,770.40
  6. Step 6: Final answer
    x = 912,215,128.28

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1.5x scale

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.