Home / 781,447.01-1,078,564.35-509,028.83

Finding the Fourth Proportional to 781,447.01, 1,078,564.35 and 509,028.83

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Solution

The fourth proportional to 781,447.01, 1,078,564.35 and 509,028.83 is: 702,568.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,447.01 : 1,078,564.35 = 509,028.83 : x
  2. Step 2: Convert to fraction form
    781,447.01/1,078,564.35 = 509,028.83/x
  3. Step 3: Cross multiply
    781,447.01x = 1,078,564.35 × 509,028.83
  4. Step 4: Simplify right side
    781,447.01x = 549,020,343,767.39
  5. Step 5: Solve for x
    x = 549,020,343,767.39/781,447.01
  6. Step 6: Final answer
    x = 702,568.88

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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.