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Finding the Fourth Proportional to 660,677.16, 911,323.20 and 550,013.40

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Solution

The fourth proportional to 660,677.16, 911,323.20 and 550,013.40 is: 758,676.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,677.16 : 911,323.20 = 550,013.40 : x
  2. Step 2: Convert to fraction form
    660,677.16/911,323.20 = 550,013.40/x
  3. Step 3: Cross multiply
    660,677.16x = 911,323.20 × 550,013.40
  4. Step 4: Simplify right side
    660,677.16x = 501,239,971,730.88
  5. Step 5: Solve for x
    x = 501,239,971,730.88/660,677.16
  6. Step 6: Final answer
    x = 758,676.10

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1.5x scale

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.