Home / 905,920,792.92-1,250,024,853.90-509,420,142.36

Finding the Fourth Proportional to 905,920,792.92, 1,250,024,853.90 and 509,420,142.36

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Solution

The fourth proportional to 905,920,792.92, 1,250,024,853.90 and 509,420,142.36 is: 702,917,787.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,920,792.92 : 1,250,024,853.90 = 509,420,142.36 : x
  2. Step 2: Convert to fraction form
    905,920,792.92/1,250,024,853.90 = 509,420,142.36/x
  3. Step 3: Cross multiply
    905,920,792.92x = 1,250,024,853.90 × 509,420,142.36
  4. Step 4: Simplify right side
    905,920,792.92x = 636,787,839,027,276,288
  5. Step 5: Solve for x
    x = 636,787,839,027,276,288/905,920,792.92
  6. Step 6: Final answer
    x = 702,917,787.08

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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.