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Finding the Fourth Proportional to 4,270,979.93, 6,407,411.00 and 1,238,472.40

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Solution

The fourth proportional to 4,270,979.93, 6,407,411.00 and 1,238,472.40 is: 1,857,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,270,979.93 : 6,407,411.00 = 1,238,472.40 : x
  2. Step 2: Convert to fraction form
    4,270,979.93/6,407,411.00 = 1,238,472.40/x
  3. Step 3: Cross multiply
    4,270,979.93x = 6,407,411.00 × 1,238,472.40
  4. Step 4: Simplify right side
    4,270,979.93x = 7,935,401,703,419.53
  5. Step 5: Solve for x
    x = 7,935,401,703,419.53/4,270,979.93
  6. Step 6: Final answer
    x = 1,857,981.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.