Home / 1,217,231,920.35-1,679,817,538.80-688,585,303.71

Finding the Fourth Proportional to 1,217,231,920.35, 1,679,817,538.80 and 688,585,303.71

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Solution

The fourth proportional to 1,217,231,920.35, 1,679,817,538.80 and 688,585,303.71 is: 950,268,926.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217,231,920.35 : 1,679,817,538.80 = 688,585,303.71 : x
  2. Step 2: Convert to fraction form
    1,217,231,920.35/1,679,817,538.80 = 688,585,303.71/x
  3. Step 3: Cross multiply
    1,217,231,920.35x = 1,679,817,538.80 × 688,585,303.71
  4. Step 4: Simplify right side
    1,217,231,920.35x = 1,156,697,670,131,982,848
  5. Step 5: Solve for x
    x = 1,156,697,670,131,982,848/1,217,231,920.35
  6. Step 6: Final answer
    x = 950,268,926.40

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.