Home / 717,516,718.16-990,173,033.16-387,491,825.36

Finding the Fourth Proportional to 717,516,718.16, 990,173,033.16 and 387,491,825.36

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Solution

The fourth proportional to 717,516,718.16, 990,173,033.16 and 387,491,825.36 is: 534,738,698.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,516,718.16 : 990,173,033.16 = 387,491,825.36 : x
  2. Step 2: Convert to fraction form
    717,516,718.16/990,173,033.16 = 387,491,825.36/x
  3. Step 3: Cross multiply
    717,516,718.16x = 990,173,033.16 × 387,491,825.36
  4. Step 4: Simplify right side
    717,516,718.16x = 383,683,956,041,416,192
  5. Step 5: Solve for x
    x = 383,683,956,041,416,192/717,516,718.16
  6. Step 6: Final answer
    x = 534,738,698.53

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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.