Home / 660,549,644.40-990,824,466.60-272,172,561.60

Finding the Fourth Proportional to 660,549,644.40, 990,824,466.60 and 272,172,561.60

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Solution

The fourth proportional to 660,549,644.40, 990,824,466.60 and 272,172,561.60 is: 408,258,842.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,549,644.40 : 990,824,466.60 = 272,172,561.60 : x
  2. Step 2: Convert to fraction form
    660,549,644.40/990,824,466.60 = 272,172,561.60/x
  3. Step 3: Cross multiply
    660,549,644.40x = 990,824,466.60 × 272,172,561.60
  4. Step 4: Simplify right side
    660,549,644.40x = 269,675,233,170,475,680
  5. Step 5: Solve for x
    x = 269,675,233,170,475,680/660,549,644.40
  6. Step 6: Final answer
    x = 408,258,842.40

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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.