Home / 903,205,868.16-1,244,101,727.28-638,432,661.60

Finding the Fourth Proportional to 903,205,868.16, 1,244,101,727.28 and 638,432,661.60

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Solution

The fourth proportional to 903,205,868.16, 1,244,101,727.28 and 638,432,661.60 is: 879,395,501.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,205,868.16 : 1,244,101,727.28 = 638,432,661.60 : x
  2. Step 2: Convert to fraction form
    903,205,868.16/1,244,101,727.28 = 638,432,661.60/x
  3. Step 3: Cross multiply
    903,205,868.16x = 1,244,101,727.28 × 638,432,661.60
  4. Step 4: Simplify right side
    903,205,868.16x = 794,275,177,048,527,744
  5. Step 5: Solve for x
    x = 794,275,177,048,527,744/903,205,868.16
  6. Step 6: Final answer
    x = 879,395,501.12

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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.