Home / 1,258,987,564.20-1,888,623,063.90-385,581,995.40

Finding the Fourth Proportional to 1,258,987,564.20, 1,888,623,063.90 and 385,581,995.40

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Solution

The fourth proportional to 1,258,987,564.20, 1,888,623,063.90 and 385,581,995.40 is: 578,416,396.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,987,564.20 : 1,888,623,063.90 = 385,581,995.40 : x
  2. Step 2: Convert to fraction form
    1,258,987,564.20/1,888,623,063.90 = 385,581,995.40/x
  3. Step 3: Cross multiply
    1,258,987,564.20x = 1,888,623,063.90 × 385,581,995.40
  4. Step 4: Simplify right side
    1,258,987,564.20x = 728,219,049,537,023,744
  5. Step 5: Solve for x
    x = 728,219,049,537,023,744/1,258,987,564.20
  6. Step 6: Final answer
    x = 578,416,396.03

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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.