Home / 699,159,661,657.49-964,830,064,907.40-390,515,524,929.65

Finding the Fourth Proportional to 699,159,661,657.49, 964,830,064,907.40 and 390,515,524,929.65

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Solution

The fourth proportional to 699,159,661,657.49, 964,830,064,907.40 and 390,515,524,929.65 is: 538,905,689,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,661,657.49 : 964,830,064,907.40 = 390,515,524,929.65 : x
  2. Step 2: Convert to fraction form
    699,159,661,657.49/964,830,064,907.40 = 390,515,524,929.65/x
  3. Step 3: Cross multiply
    699,159,661,657.49x = 964,830,064,907.40 × 390,515,524,929.65
  4. Step 4: Simplify right side
    699,159,661,657.49x = 376,781,119,265,221,623,414,784
  5. Step 5: Solve for x
    x = 376,781,119,265,221,623,414,784/699,159,661,657.49
  6. Step 6: Final answer
    x = 538,905,689,112.54

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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.