Home / 1,288,543.76-1,778,214.48-715,637.60

Finding the Fourth Proportional to 1,288,543.76, 1,778,214.48 and 715,637.60

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Solution

The fourth proportional to 1,288,543.76, 1,778,214.48 and 715,637.60 is: 987,593.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,543.76 : 1,778,214.48 = 715,637.60 : x
  2. Step 2: Convert to fraction form
    1,288,543.76/1,778,214.48 = 715,637.60/x
  3. Step 3: Cross multiply
    1,288,543.76x = 1,778,214.48 × 715,637.60
  4. Step 4: Simplify right side
    1,288,543.76x = 1,272,557,142,752.45
  5. Step 5: Solve for x
    x = 1,272,557,142,752.45/1,288,543.76
  6. Step 6: Final answer
    x = 987,593.27

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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.