Home / 1,202,646.40-1,659,678.80-686,390

Finding the Fourth Proportional to 1,202,646.40, 1,659,678.80 and 686,390

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Solution

The fourth proportional to 1,202,646.40, 1,659,678.80 and 686,390 is: 947,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202,646.40 : 1,659,678.80 = 686,390 : x
  2. Step 2: Convert to fraction form
    1,202,646.40/1,659,678.80 = 686,390/x
  3. Step 3: Cross multiply
    1,202,646.40x = 1,659,678.80 × 686,390
  4. Step 4: Simplify right side
    1,202,646.40x = 1,139,186,931,532
  5. Step 5: Solve for x
    x = 1,139,186,931,532/1,202,646.40
  6. Step 6: Final answer
    x = 947,233.48

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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.