Home / 1,291,347.03-1,781,577.54-807,728.43

Finding the Fourth Proportional to 1,291,347.03, 1,781,577.54 and 807,728.43

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Solution

The fourth proportional to 1,291,347.03, 1,781,577.54 and 807,728.43 is: 1,114,364.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,347.03 : 1,781,577.54 = 807,728.43 : x
  2. Step 2: Convert to fraction form
    1,291,347.03/1,781,577.54 = 807,728.43/x
  3. Step 3: Cross multiply
    1,291,347.03x = 1,781,577.54 × 807,728.43
  4. Step 4: Simplify right side
    1,291,347.03x = 1,439,030,829,307.46
  5. Step 5: Solve for x
    x = 1,439,030,829,307.46/1,291,347.03
  6. Step 6: Final answer
    x = 1,114,364.15

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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.