Home / 720,913,039.92-1,081,411,430.00-278,258,247.54

Finding the Fourth Proportional to 720,913,039.92, 1,081,411,430.00 and 278,258,247.54

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Solution

The fourth proportional to 720,913,039.92, 1,081,411,430.00 and 278,258,247.54 is: 417,403,532.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,913,039.92 : 1,081,411,430.00 = 278,258,247.54 : x
  2. Step 2: Convert to fraction form
    720,913,039.92/1,081,411,430.00 = 278,258,247.54/x
  3. Step 3: Cross multiply
    720,913,039.92x = 1,081,411,430.00 × 278,258,247.54
  4. Step 4: Simplify right side
    720,913,039.92x = 300,911,649,380,134,080
  5. Step 5: Solve for x
    x = 300,911,649,380,134,080/720,913,039.92
  6. Step 6: Final answer
    x = 417,403,532.35

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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.