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Finding the Fourth Proportional to 815,602.72, 1,125,516.72 and 453,012.16

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Solution

The fourth proportional to 815,602.72, 1,125,516.72 and 453,012.16 is: 625,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,602.72 : 1,125,516.72 = 453,012.16 : x
  2. Step 2: Convert to fraction form
    815,602.72/1,125,516.72 = 453,012.16/x
  3. Step 3: Cross multiply
    815,602.72x = 1,125,516.72 × 453,012.16
  4. Step 4: Simplify right side
    815,602.72x = 509,872,760,443.32
  5. Step 5: Solve for x
    x = 509,872,760,443.32/815,602.72
  6. Step 6: Final answer
    x = 625,148.43

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Double scale
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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.