Home / 1,119,122,154.73-1,678,686,381.38-429,240,877.93

Finding the Fourth Proportional to 1,119,122,154.73, 1,678,686,381.38 and 429,240,877.93

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Solution

The fourth proportional to 1,119,122,154.73, 1,678,686,381.38 and 429,240,877.93 is: 643,862,524.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119,122,154.73 : 1,678,686,381.38 = 429,240,877.93 : x
  2. Step 2: Convert to fraction form
    1,119,122,154.73/1,678,686,381.38 = 429,240,877.93/x
  3. Step 3: Cross multiply
    1,119,122,154.73x = 1,678,686,381.38 × 429,240,877.93
  4. Step 4: Simplify right side
    1,119,122,154.73x = 720,560,816,112,686,080
  5. Step 5: Solve for x
    x = 720,560,816,112,686,080/1,119,122,154.73
  6. Step 6: Final answer
    x = 643,862,524.81

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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.