Home / 1,298,565.79-1,791,989.51-709,839.06

Finding the Fourth Proportional to 1,298,565.79, 1,791,989.51 and 709,839.06

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Solution

The fourth proportional to 1,298,565.79, 1,791,989.51 and 709,839.06 is: 979,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,565.79 : 1,791,989.51 = 709,839.06 : x
  2. Step 2: Convert to fraction form
    1,298,565.79/1,791,989.51 = 709,839.06/x
  3. Step 3: Cross multiply
    1,298,565.79x = 1,791,989.51 × 709,839.06
  4. Step 4: Simplify right side
    1,298,565.79x = 1,272,024,139,039.10
  5. Step 5: Solve for x
    x = 1,272,024,139,039.10/1,298,565.79
  6. Step 6: Final answer
    x = 979,560.80

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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.