Home / 645,117.80-966,510.30-551,805.80

Finding the Fourth Proportional to 645,117.80, 966,510.30 and 551,805.80

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Solution

The fourth proportional to 645,117.80, 966,510.30 and 551,805.80 is: 826,711.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,117.80 : 966,510.30 = 551,805.80 : x
  2. Step 2: Convert to fraction form
    645,117.80/966,510.30 = 551,805.80/x
  3. Step 3: Cross multiply
    645,117.80x = 966,510.30 × 551,805.80
  4. Step 4: Simplify right side
    645,117.80x = 533,325,989,299.74
  5. Step 5: Solve for x
    x = 533,325,989,299.74/645,117.80
  6. Step 6: Final answer
    x = 826,711.01

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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.