Home / 765,978.93-1,056,985.61-426,478.77

Finding the Fourth Proportional to 765,978.93, 1,056,985.61 and 426,478.77

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Solution

The fourth proportional to 765,978.93, 1,056,985.61 and 426,478.77 is: 588,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,978.93 : 1,056,985.61 = 426,478.77 : x
  2. Step 2: Convert to fraction form
    765,978.93/1,056,985.61 = 426,478.77/x
  3. Step 3: Cross multiply
    765,978.93x = 1,056,985.61 × 426,478.77
  4. Step 4: Simplify right side
    765,978.93x = 450,781,920,728.11
  5. Step 5: Solve for x
    x = 450,781,920,728.11/765,978.93
  6. Step 6: Final answer
    x = 588,504.33

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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.