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Finding the Fourth Proportional to 916,607, 1,264,926.30 and 514,207.64

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Solution

The fourth proportional to 916,607, 1,264,926.30 and 514,207.64 is: 709,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    916,607 : 1,264,926.30 = 514,207.64 : x
  2. Step 2: Convert to fraction form
    916,607/1,264,926.30 = 514,207.64/x
  3. Step 3: Cross multiply
    916,607x = 1,264,926.30 × 514,207.64
  4. Step 4: Simplify right side
    916,607x = 650,434,767,496.93
  5. Step 5: Solve for x
    x = 650,434,767,496.93/916,607
  6. Step 6: Final answer
    x = 709,611.39

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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.