Home / 660,385,608.40-990,578,412.60-272,008,525.60

Finding the Fourth Proportional to 660,385,608.40, 990,578,412.60 and 272,008,525.60

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Solution

The fourth proportional to 660,385,608.40, 990,578,412.60 and 272,008,525.60 is: 408,012,788.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,385,608.40 : 990,578,412.60 = 272,008,525.60 : x
  2. Step 2: Convert to fraction form
    660,385,608.40/990,578,412.60 = 272,008,525.60/x
  3. Step 3: Cross multiply
    660,385,608.40x = 990,578,412.60 × 272,008,525.60
  4. Step 4: Simplify right side
    660,385,608.40x = 269,445,773,502,514,496
  5. Step 5: Solve for x
    x = 269,445,773,502,514,496/660,385,608.40
  6. Step 6: Final answer
    x = 408,012,788.40

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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.