Home / 840,663,512.46-1,160,187,356.70-469,457,256.78

Finding the Fourth Proportional to 840,663,512.46, 1,160,187,356.70 and 469,457,256.78

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Solution

The fourth proportional to 840,663,512.46, 1,160,187,356.70 and 469,457,256.78 is: 647,891,059.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,663,512.46 : 1,160,187,356.70 = 469,457,256.78 : x
  2. Step 2: Convert to fraction form
    840,663,512.46/1,160,187,356.70 = 469,457,256.78/x
  3. Step 3: Cross multiply
    840,663,512.46x = 1,160,187,356.70 × 469,457,256.78
  4. Step 4: Simplify right side
    840,663,512.46x = 544,658,373,827,221,312
  5. Step 5: Solve for x
    x = 544,658,373,827,221,312/840,663,512.46
  6. Step 6: Final answer
    x = 647,891,059.57

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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.