Home / 731,780.37-1,009,808.11-405,071.28

Finding the Fourth Proportional to 731,780.37, 1,009,808.11 and 405,071.28

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Solution

The fourth proportional to 731,780.37, 1,009,808.11 and 405,071.28 is: 558,971.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,780.37 : 1,009,808.11 = 405,071.28 : x
  2. Step 2: Convert to fraction form
    731,780.37/1,009,808.11 = 405,071.28/x
  3. Step 3: Cross multiply
    731,780.37x = 1,009,808.11 × 405,071.28
  4. Step 4: Simplify right side
    731,780.37x = 409,044,263,672.08
  5. Step 5: Solve for x
    x = 409,044,263,672.08/731,780.37
  6. Step 6: Final answer
    x = 558,971.35

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1.5x scale

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.