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Finding the Fourth Proportional to 1,245,916.76, 1,719,366.35 and 672,956.93

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Solution

The fourth proportional to 1,245,916.76, 1,719,366.35 and 672,956.93 is: 928,681.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,916.76 : 1,719,366.35 = 672,956.93 : x
  2. Step 2: Convert to fraction form
    1,245,916.76/1,719,366.35 = 672,956.93/x
  3. Step 3: Cross multiply
    1,245,916.76x = 1,719,366.35 × 672,956.93
  4. Step 4: Simplify right side
    1,245,916.76x = 1,157,059,488,479.69
  5. Step 5: Solve for x
    x = 1,157,059,488,479.69/1,245,916.76
  6. Step 6: Final answer
    x = 928,681.22

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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.