Home / 699,159,662,311.10-964,830,065,811.65-390,515,525,585.20

Finding the Fourth Proportional to 699,159,662,311.10, 964,830,065,811.65 and 390,515,525,585.20

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Solution

The fourth proportional to 699,159,662,311.10, 964,830,065,811.65 and 390,515,525,585.20 is: 538,905,690,018.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,159,662,311.10 : 964,830,065,811.65 = 390,515,525,585.20 : x
  2. Step 2: Convert to fraction form
    699,159,662,311.10/964,830,065,811.65 = 390,515,525,585.20/x
  3. Step 3: Cross multiply
    699,159,662,311.10x = 964,830,065,811.65 × 390,515,525,585.20
  4. Step 4: Simplify right side
    699,159,662,311.10x = 376,781,120,250,839,643,979,776
  5. Step 5: Solve for x
    x = 376,781,120,250,839,643,979,776/699,159,662,311.10
  6. Step 6: Final answer
    x = 538,905,690,018.46

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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.