Home / 1,390,887.60-2,087,713.80-681,716.40

Finding the Fourth Proportional to 1,390,887.60, 2,087,713.80 and 681,716.40

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Solution

The fourth proportional to 1,390,887.60, 2,087,713.80 and 681,716.40 is: 1,023,252.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,887.60 : 2,087,713.80 = 681,716.40 : x
  2. Step 2: Convert to fraction form
    1,390,887.60/2,087,713.80 = 681,716.40/x
  3. Step 3: Cross multiply
    1,390,887.60x = 2,087,713.80 × 681,716.40
  4. Step 4: Simplify right side
    1,390,887.60x = 1,423,228,735,966.32
  5. Step 5: Solve for x
    x = 1,423,228,735,966.32/1,390,887.60
  6. Step 6: Final answer
    x = 1,023,252.16

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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.