Home / 1,320,534.93-1,980,802.53-689,301.12

Finding the Fourth Proportional to 1,320,534.93, 1,980,802.53 and 689,301.12

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Solution

The fourth proportional to 1,320,534.93, 1,980,802.53 and 689,301.12 is: 1,033,951.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,534.93 : 1,980,802.53 = 689,301.12 : x
  2. Step 2: Convert to fraction form
    1,320,534.93/1,980,802.53 = 689,301.12/x
  3. Step 3: Cross multiply
    1,320,534.93x = 1,980,802.53 × 689,301.12
  4. Step 4: Simplify right side
    1,320,534.93x = 1,365,369,402,427.83
  5. Step 5: Solve for x
    x = 1,365,369,402,427.83/1,320,534.93
  6. Step 6: Final answer
    x = 1,033,951.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.