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Finding the Fourth Proportional to 917,597,360.40, 1,376,396,040.60 and 825,764,355.60

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Solution

The fourth proportional to 917,597,360.40, 1,376,396,040.60 and 825,764,355.60 is: 1,238,646,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,597,360.40 : 1,376,396,040.60 = 825,764,355.60 : x
  2. Step 2: Convert to fraction form
    917,597,360.40/1,376,396,040.60 = 825,764,355.60/x
  3. Step 3: Cross multiply
    917,597,360.40x = 1,376,396,040.60 × 825,764,355.60
  4. Step 4: Simplify right side
    917,597,360.40x = 1,136,578,789,516,450,432
  5. Step 5: Solve for x
    x = 1,136,578,789,516,450,432/917,597,360.40
  6. Step 6: Final answer
    x = 1,238,646,533.40

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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.