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Finding the Fourth Proportional to 1,356,646.52, 1,872,078.54 and 752,987

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Solution

The fourth proportional to 1,356,646.52, 1,872,078.54 and 752,987 is: 1,039,070.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,356,646.52 : 1,872,078.54 = 752,987 : x
  2. Step 2: Convert to fraction form
    1,356,646.52/1,872,078.54 = 752,987/x
  3. Step 3: Cross multiply
    1,356,646.52x = 1,872,078.54 × 752,987
  4. Step 4: Simplify right side
    1,356,646.52x = 1,409,650,803,598.98
  5. Step 5: Solve for x
    x = 1,409,650,803,598.98/1,356,646.52
  6. Step 6: Final answer
    x = 1,039,070.08

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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.