Home / 912,388,001.80-1,368,078,117.90-298,656,315.40

Finding the Fourth Proportional to 912,388,001.80, 1,368,078,117.90 and 298,656,315.40

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Solution

The fourth proportional to 912,388,001.80, 1,368,078,117.90 and 298,656,315.40 is: 447,819,534.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,388,001.80 : 1,368,078,117.90 = 298,656,315.40 : x
  2. Step 2: Convert to fraction form
    912,388,001.80/1,368,078,117.90 = 298,656,315.40/x
  3. Step 3: Cross multiply
    912,388,001.80x = 1,368,078,117.90 × 298,656,315.40
  4. Step 4: Simplify right side
    912,388,001.80x = 408,585,169,871,380,800
  5. Step 5: Solve for x
    x = 408,585,169,871,380,800/912,388,001.80
  6. Step 6: Final answer
    x = 447,819,534.09

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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.