Home / 1,247,699,539.50-1,868,578,283.78-721,960,666.16

Finding the Fourth Proportional to 1,247,699,539.50, 1,868,578,283.78 and 721,960,666.16

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Solution

The fourth proportional to 1,247,699,539.50, 1,868,578,283.78 and 721,960,666.16 is: 1,081,221,864.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247,699,539.50 : 1,868,578,283.78 = 721,960,666.16 : x
  2. Step 2: Convert to fraction form
    1,247,699,539.50/1,868,578,283.78 = 721,960,666.16/x
  3. Step 3: Cross multiply
    1,247,699,539.50x = 1,868,578,283.78 × 721,960,666.16
  4. Step 4: Simplify right side
    1,247,699,539.50x = 1,349,040,022,516,965,632
  5. Step 5: Solve for x
    x = 1,349,040,022,516,965,632/1,247,699,539.50
  6. Step 6: Final answer
    x = 1,081,221,864.57

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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.