Home / 678,304,021.40-1,017,530,681.70-247,575,829.40

Finding the Fourth Proportional to 678,304,021.40, 1,017,530,681.70 and 247,575,829.40

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Solution

The fourth proportional to 678,304,021.40, 1,017,530,681.70 and 247,575,829.40 is: 371,390,990.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,304,021.40 : 1,017,530,681.70 = 247,575,829.40 : x
  2. Step 2: Convert to fraction form
    678,304,021.40/1,017,530,681.70 = 247,575,829.40/x
  3. Step 3: Cross multiply
    678,304,021.40x = 1,017,530,681.70 × 247,575,829.40
  4. Step 4: Simplify right side
    678,304,021.40x = 251,916,002,461,824,928
  5. Step 5: Solve for x
    x = 251,916,002,461,824,928/678,304,021.40
  6. Step 6: Final answer
    x = 371,390,990.64

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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.