Home / 731,978.12-1,010,129.63-409,688.20

Finding the Fourth Proportional to 731,978.12, 1,010,129.63 and 409,688.20

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Solution

The fourth proportional to 731,978.12, 1,010,129.63 and 409,688.20 is: 565,369.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,978.12 : 1,010,129.63 = 409,688.20 : x
  2. Step 2: Convert to fraction form
    731,978.12/1,010,129.63 = 409,688.20/x
  3. Step 3: Cross multiply
    731,978.12x = 1,010,129.63 × 409,688.20
  4. Step 4: Simplify right side
    731,978.12x = 413,838,189,881.37
  5. Step 5: Solve for x
    x = 413,838,189,881.37/731,978.12
  6. Step 6: Final answer
    x = 565,369.62

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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.