Home / 679,938,653.20-1,019,907,979.80-219,923,323.60

Finding the Fourth Proportional to 679,938,653.20, 1,019,907,979.80 and 219,923,323.60

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Solution

The fourth proportional to 679,938,653.20, 1,019,907,979.80 and 219,923,323.60 is: 329,884,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,938,653.20 : 1,019,907,979.80 = 219,923,323.60 : x
  2. Step 2: Convert to fraction form
    679,938,653.20/1,019,907,979.80 = 219,923,323.60/x
  3. Step 3: Cross multiply
    679,938,653.20x = 1,019,907,979.80 × 219,923,323.60
  4. Step 4: Simplify right side
    679,938,653.20x = 224,301,552,683,777,632
  5. Step 5: Solve for x
    x = 224,301,552,683,777,632/679,938,653.20
  6. Step 6: Final answer
    x = 329,884,985.40

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1.5x scale

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.