Home / 428,721,095.69-591,416,973.88-280,129,084.01

Finding the Fourth Proportional to 428,721,095.69, 591,416,973.88 and 280,129,084.01

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Solution

The fourth proportional to 428,721,095.69, 591,416,973.88 and 280,129,084.01 is: 386,435,603.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,721,095.69 : 591,416,973.88 = 280,129,084.01 : x
  2. Step 2: Convert to fraction form
    428,721,095.69/591,416,973.88 = 280,129,084.01/x
  3. Step 3: Cross multiply
    428,721,095.69x = 591,416,973.88 × 280,129,084.01
  4. Step 4: Simplify right side
    428,721,095.69x = 165,673,095,160,970,496
  5. Step 5: Solve for x
    x = 165,673,095,160,970,496/428,721,095.69
  6. Step 6: Final answer
    x = 386,435,603.07

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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.