Home / 626,730.32-865,024.20-385,139.60

Finding the Fourth Proportional to 626,730.32, 865,024.20 and 385,139.60

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Solution

The fourth proportional to 626,730.32, 865,024.20 and 385,139.60 is: 531,576.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,730.32 : 865,024.20 = 385,139.60 : x
  2. Step 2: Convert to fraction form
    626,730.32/865,024.20 = 385,139.60/x
  3. Step 3: Cross multiply
    626,730.32x = 865,024.20 × 385,139.60
  4. Step 4: Simplify right side
    626,730.32x = 333,155,074,378.32
  5. Step 5: Solve for x
    x = 333,155,074,378.32/626,730.32
  6. Step 6: Final answer
    x = 531,576.44

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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.