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Finding the Fourth Proportional to 710,240.40, 1,063,805.40 and 694,688.40

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Solution

The fourth proportional to 710,240.40, 1,063,805.40 and 694,688.40 is: 1,040,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,240.40 : 1,063,805.40 = 694,688.40 : x
  2. Step 2: Convert to fraction form
    710,240.40/1,063,805.40 = 694,688.40/x
  3. Step 3: Cross multiply
    710,240.40x = 1,063,805.40 × 694,688.40
  4. Step 4: Simplify right side
    710,240.40x = 739,013,271,237.36
  5. Step 5: Solve for x
    x = 739,013,271,237.36/710,240.40
  6. Step 6: Final answer
    x = 1,040,511.45

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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.