Home / 699,159,661,656.49-964,830,064,906.02-390,515,524,928.65

Finding the Fourth Proportional to 699,159,661,656.49, 964,830,064,906.02 and 390,515,524,928.65

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Solution

The fourth proportional to 699,159,661,656.49, 964,830,064,906.02 and 390,515,524,928.65 is: 538,905,689,111.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,661,656.49 : 964,830,064,906.02 = 390,515,524,928.65 : x
  2. Step 2: Convert to fraction form
    699,159,661,656.49/964,830,064,906.02 = 390,515,524,928.65/x
  3. Step 3: Cross multiply
    699,159,661,656.49x = 964,830,064,906.02 × 390,515,524,928.65
  4. Step 4: Simplify right side
    699,159,661,656.49x = 376,781,119,263,717,915,099,136
  5. Step 5: Solve for x
    x = 376,781,119,263,717,915,099,136/699,159,661,656.49
  6. Step 6: Final answer
    x = 538,905,689,111.16

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Double scale
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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.