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Finding the Fourth Proportional to 620,330.69, 930,620.57 and 283,280.82

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Solution

The fourth proportional to 620,330.69, 930,620.57 and 283,280.82 is: 424,978.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,330.69 : 930,620.57 = 283,280.82 : x
  2. Step 2: Convert to fraction form
    620,330.69/930,620.57 = 283,280.82/x
  3. Step 3: Cross multiply
    620,330.69x = 930,620.57 × 283,280.82
  4. Step 4: Simplify right side
    620,330.69x = 263,626,956,762.06
  5. Step 5: Solve for x
    x = 263,626,956,762.06/620,330.69
  6. Step 6: Final answer
    x = 424,978.10

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1.5x scale

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.