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Finding the Fourth Proportional to 660,731.90, 926,890.90 and 660,731.90

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Solution

The fourth proportional to 660,731.90, 926,890.90 and 660,731.90 is: 926,890.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,731.90 : 926,890.90 = 660,731.90 : x
  2. Step 2: Convert to fraction form
    660,731.90/926,890.90 = 660,731.90/x
  3. Step 3: Cross multiply
    660,731.90x = 926,890.90 × 660,731.90
  4. Step 4: Simplify right side
    660,731.90x = 612,426,385,449.71
  5. Step 5: Solve for x
    x = 612,426,385,449.71/660,731.90
  6. Step 6: Final answer
    x = 926,890.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.