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Finding the Fourth Proportional to 526,998.32, 727,262.69 and 309,210.69

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Solution

The fourth proportional to 526,998.32, 727,262.69 and 309,210.69 is: 426,713.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,998.32 : 727,262.69 = 309,210.69 : x
  2. Step 2: Convert to fraction form
    526,998.32/727,262.69 = 309,210.69/x
  3. Step 3: Cross multiply
    526,998.32x = 727,262.69 × 309,210.69
  4. Step 4: Simplify right side
    526,998.32x = 224,877,397,413.13
  5. Step 5: Solve for x
    x = 224,877,397,413.13/526,998.32
  6. Step 6: Final answer
    x = 426,713.69

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1.5x scale

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.