Home / 445,826,739.40-668,740,109.10-417,128,925.40

Finding the Fourth Proportional to 445,826,739.40, 668,740,109.10 and 417,128,925.40

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Solution

The fourth proportional to 445,826,739.40, 668,740,109.10 and 417,128,925.40 is: 625,693,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,826,739.40 : 668,740,109.10 = 417,128,925.40 : x
  2. Step 2: Convert to fraction form
    445,826,739.40/668,740,109.10 = 417,128,925.40/x
  3. Step 3: Cross multiply
    445,826,739.40x = 668,740,109.10 × 417,128,925.40
  4. Step 4: Simplify right side
    445,826,739.40x = 278,950,843,080,761,760
  5. Step 5: Solve for x
    x = 278,950,843,080,761,760/445,826,739.40
  6. Step 6: Final answer
    x = 625,693,388.10

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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.