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Finding the Fourth Proportional to 885,736,803.60, 1,328,605,205.40 and 639,573,332.40

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Solution

The fourth proportional to 885,736,803.60, 1,328,605,205.40 and 639,573,332.40 is: 959,359,998.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,736,803.60 : 1,328,605,205.40 = 639,573,332.40 : x
  2. Step 2: Convert to fraction form
    885,736,803.60/1,328,605,205.40 = 639,573,332.40/x
  3. Step 3: Cross multiply
    885,736,803.60x = 1,328,605,205.40 × 639,573,332.40
  4. Step 4: Simplify right side
    885,736,803.60x = 849,740,458,661,664,512
  5. Step 5: Solve for x
    x = 849,740,458,661,664,512/885,736,803.60
  6. Step 6: Final answer
    x = 959,359,998.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.