Home / 412,128,020.80-618,192,031.20-248,869,345.60

Finding the Fourth Proportional to 412,128,020.80, 618,192,031.20 and 248,869,345.60

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Solution

The fourth proportional to 412,128,020.80, 618,192,031.20 and 248,869,345.60 is: 373,304,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,128,020.80 : 618,192,031.20 = 248,869,345.60 : x
  2. Step 2: Convert to fraction form
    412,128,020.80/618,192,031.20 = 248,869,345.60/x
  3. Step 3: Cross multiply
    412,128,020.80x = 618,192,031.20 × 248,869,345.60
  4. Step 4: Simplify right side
    412,128,020.80x = 153,849,046,259,878,784
  5. Step 5: Solve for x
    x = 153,849,046,259,878,784/412,128,020.80
  6. Step 6: Final answer
    x = 373,304,018.40

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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.