Home / 428,785,739.25-591,390,727.72-310,153,348.09

Finding the Fourth Proportional to 428,785,739.25, 591,390,727.72 and 310,153,348.09

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Solution

The fourth proportional to 428,785,739.25, 591,390,727.72 and 310,153,348.09 is: 427,770,323.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,785,739.25 : 591,390,727.72 = 310,153,348.09 : x
  2. Step 2: Convert to fraction form
    428,785,739.25/591,390,727.72 = 310,153,348.09/x
  3. Step 3: Cross multiply
    428,785,739.25x = 591,390,727.72 × 310,153,348.09
  4. Step 4: Simplify right side
    428,785,739.25x = 183,421,814,231,739,552
  5. Step 5: Solve for x
    x = 183,421,814,231,739,552/428,785,739.25
  6. Step 6: Final answer
    x = 427,770,323.13

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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.