Home / 1,288,990.16-1,778,756.96-716,066.40

Finding the Fourth Proportional to 1,288,990.16, 1,778,756.96 and 716,066.40

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Solution

The fourth proportional to 1,288,990.16, 1,778,756.96 and 716,066.40 is: 988,144.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,990.16 : 1,778,756.96 = 716,066.40 : x
  2. Step 2: Convert to fraction form
    1,288,990.16/1,778,756.96 = 716,066.40/x
  3. Step 3: Cross multiply
    1,288,990.16x = 1,778,756.96 × 716,066.40
  4. Step 4: Simplify right side
    1,288,990.16x = 1,273,708,092,822.14
  5. Step 5: Solve for x
    x = 1,273,708,092,822.14/1,288,990.16
  6. Step 6: Final answer
    x = 988,144.16

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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.