Home / 717,980,879.40-1,077,821,624.70-407,335,900.20

Finding the Fourth Proportional to 717,980,879.40, 1,077,821,624.70 and 407,335,900.20

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Solution

The fourth proportional to 717,980,879.40, 1,077,821,624.70 and 407,335,900.20 is: 611,486,258.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,980,879.40 : 1,077,821,624.70 = 407,335,900.20 : x
  2. Step 2: Convert to fraction form
    717,980,879.40/1,077,821,624.70 = 407,335,900.20/x
  3. Step 3: Cross multiply
    717,980,879.40x = 1,077,821,624.70 × 407,335,900.20
  4. Step 4: Simplify right side
    717,980,879.40x = 439,035,441,752,201,088
  5. Step 5: Solve for x
    x = 439,035,441,752,201,088/717,980,879.40
  6. Step 6: Final answer
    x = 611,486,258.69

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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.