Home / 1,152,786.60-1,590,779.52-643,521.24

Finding the Fourth Proportional to 1,152,786.60, 1,590,779.52 and 643,521.24

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Solution

The fourth proportional to 1,152,786.60, 1,590,779.52 and 643,521.24 is: 888,022.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,786.60 : 1,590,779.52 = 643,521.24 : x
  2. Step 2: Convert to fraction form
    1,152,786.60/1,590,779.52 = 643,521.24/x
  3. Step 3: Cross multiply
    1,152,786.60x = 1,590,779.52 × 643,521.24
  4. Step 4: Simplify right side
    1,152,786.60x = 1,023,700,409,277.00
  5. Step 5: Solve for x
    x = 1,023,700,409,277.00/1,152,786.60
  6. Step 6: Final answer
    x = 888,022.47

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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.