Home / 1,290,965.40-1,781,532.36-710,196.72

Finding the Fourth Proportional to 1,290,965.40, 1,781,532.36 and 710,196.72

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Solution

The fourth proportional to 1,290,965.40, 1,781,532.36 and 710,196.72 is: 980,071.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,965.40 : 1,781,532.36 = 710,196.72 : x
  2. Step 2: Convert to fraction form
    1,290,965.40/1,781,532.36 = 710,196.72/x
  3. Step 3: Cross multiply
    1,290,965.40x = 1,781,532.36 × 710,196.72
  4. Step 4: Simplify right side
    1,290,965.40x = 1,265,238,438,645.86
  5. Step 5: Solve for x
    x = 1,265,238,438,645.86/1,290,965.40
  6. Step 6: Final answer
    x = 980,071.53

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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.