Home / 1,057,248,001.20-1,585,872,001.80-643,999,479.60

Finding the Fourth Proportional to 1,057,248,001.20, 1,585,872,001.80 and 643,999,479.60

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Solution

The fourth proportional to 1,057,248,001.20, 1,585,872,001.80 and 643,999,479.60 is: 965,999,219.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057,248,001.20 : 1,585,872,001.80 = 643,999,479.60 : x
  2. Step 2: Convert to fraction form
    1,057,248,001.20/1,585,872,001.80 = 643,999,479.60/x
  3. Step 3: Cross multiply
    1,057,248,001.20x = 1,585,872,001.80 × 643,999,479.60
  4. Step 4: Simplify right side
    1,057,248,001.20x = 1,021,300,743,871,410,304
  5. Step 5: Solve for x
    x = 1,021,300,743,871,410,304/1,057,248,001.20
  6. Step 6: Final answer
    x = 965,999,219.40

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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.