Home / 1,288,427.60-1,778,075.88-715,477.52

Finding the Fourth Proportional to 1,288,427.60, 1,778,075.88 and 715,477.52

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Solution

The fourth proportional to 1,288,427.60, 1,778,075.88 and 715,477.52 is: 987,384.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,427.60 : 1,778,075.88 = 715,477.52 : x
  2. Step 2: Convert to fraction form
    1,288,427.60/1,778,075.88 = 715,477.52/x
  3. Step 3: Cross multiply
    1,288,427.60x = 1,778,075.88 × 715,477.52
  4. Step 4: Simplify right side
    1,288,427.60x = 1,272,173,320,994.22
  5. Step 5: Solve for x
    x = 1,272,173,320,994.22/1,288,427.60
  6. Step 6: Final answer
    x = 987,384.41

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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.