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Finding the Fourth Proportional to 717,667.79, 989,018.82 and 513,363.88

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Solution

The fourth proportional to 717,667.79, 989,018.82 and 513,363.88 is: 707,467.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,667.79 : 989,018.82 = 513,363.88 : x
  2. Step 2: Convert to fraction form
    717,667.79/989,018.82 = 513,363.88/x
  3. Step 3: Cross multiply
    717,667.79x = 989,018.82 × 513,363.88
  4. Step 4: Simplify right side
    717,667.79x = 507,726,538,828.22
  5. Step 5: Solve for x
    x = 507,726,538,828.22/717,667.79
  6. Step 6: Final answer
    x = 707,467.37

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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.