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Finding the Fourth Proportional to 717,325.84, 989,864.04 and 430,858

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Solution

The fourth proportional to 717,325.84, 989,864.04 and 430,858 is: 594,556.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,325.84 : 989,864.04 = 430,858 : x
  2. Step 2: Convert to fraction form
    717,325.84/989,864.04 = 430,858/x
  3. Step 3: Cross multiply
    717,325.84x = 989,864.04 × 430,858
  4. Step 4: Simplify right side
    717,325.84x = 426,490,840,546.32
  5. Step 5: Solve for x
    x = 426,490,840,546.32/717,325.84
  6. Step 6: Final answer
    x = 594,556.64

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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.