Home / 1,288,671.48-1,778,403.54-715,748.55

Finding the Fourth Proportional to 1,288,671.48, 1,778,403.54 and 715,748.55

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Solution

The fourth proportional to 1,288,671.48, 1,778,403.54 and 715,748.55 is: 987,753.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,671.48 : 1,778,403.54 = 715,748.55 : x
  2. Step 2: Convert to fraction form
    1,288,671.48/1,778,403.54 = 715,748.55/x
  3. Step 3: Cross multiply
    1,288,671.48x = 1,778,403.54 × 715,748.55
  4. Step 4: Simplify right side
    1,288,671.48x = 1,272,889,755,069.87
  5. Step 5: Solve for x
    x = 1,272,889,755,069.87/1,288,671.48
  6. Step 6: Final answer
    x = 987,753.49

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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.