Home / 1,422,985.16-1,963,766.36-778,390.61

Finding the Fourth Proportional to 1,422,985.16, 1,963,766.36 and 778,390.61

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Solution

The fourth proportional to 1,422,985.16, 1,963,766.36 and 778,390.61 is: 1,074,204.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,985.16 : 1,963,766.36 = 778,390.61 : x
  2. Step 2: Convert to fraction form
    1,422,985.16/1,963,766.36 = 778,390.61/x
  3. Step 3: Cross multiply
    1,422,985.16x = 1,963,766.36 × 778,390.61
  4. Step 4: Simplify right side
    1,422,985.16x = 1,528,577,286,985.02
  5. Step 5: Solve for x
    x = 1,528,577,286,985.02/1,422,985.16
  6. Step 6: Final answer
    x = 1,074,204.66

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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.