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Finding the Fourth Proportional to 815,670, 1,125,656.19 and 453,121.38

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Solution

The fourth proportional to 815,670, 1,125,656.19 and 453,121.38 is: 625,325.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,670 : 1,125,656.19 = 453,121.38 : x
  2. Step 2: Convert to fraction form
    815,670/1,125,656.19 = 453,121.38/x
  3. Step 3: Cross multiply
    815,670x = 1,125,656.19 × 453,121.38
  4. Step 4: Simplify right side
    815,670x = 510,058,886,218.34
  5. Step 5: Solve for x
    x = 510,058,886,218.34/815,670
  6. Step 6: Final answer
    x = 625,325.05

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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.