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Finding the Fourth Proportional to 660,007.30, 988,336.33 and 553,110.15

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Solution

The fourth proportional to 660,007.30, 988,336.33 and 553,110.15 is: 828,261.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,007.30 : 988,336.33 = 553,110.15 : x
  2. Step 2: Convert to fraction form
    660,007.30/988,336.33 = 553,110.15/x
  3. Step 3: Cross multiply
    660,007.30x = 988,336.33 × 553,110.15
  4. Step 4: Simplify right side
    660,007.30x = 546,658,855,736.75
  5. Step 5: Solve for x
    x = 546,658,855,736.75/660,007.30
  6. Step 6: Final answer
    x = 828,261.83

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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.