Home / 1,428,556.47-1,971,277.65-847,679.49

Finding the Fourth Proportional to 1,428,556.47, 1,971,277.65 and 847,679.49

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Solution

The fourth proportional to 1,428,556.47, 1,971,277.65 and 847,679.49 is: 1,169,720.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,556.47 : 1,971,277.65 = 847,679.49 : x
  2. Step 2: Convert to fraction form
    1,428,556.47/1,971,277.65 = 847,679.49/x
  3. Step 3: Cross multiply
    1,428,556.47x = 1,971,277.65 × 847,679.49
  4. Step 4: Simplify right side
    1,428,556.47x = 1,671,011,633,000.40
  5. Step 5: Solve for x
    x = 1,671,011,633,000.40/1,428,556.47
  6. Step 6: Final answer
    x = 1,169,720.39

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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.