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Finding the Fourth Proportional to 720,033.35, 993,646.58 and 393,350.85

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Solution

The fourth proportional to 720,033.35, 993,646.58 and 393,350.85 is: 542,824.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,033.35 : 993,646.58 = 393,350.85 : x
  2. Step 2: Convert to fraction form
    720,033.35/993,646.58 = 393,350.85/x
  3. Step 3: Cross multiply
    720,033.35x = 993,646.58 × 393,350.85
  4. Step 4: Simplify right side
    720,033.35x = 390,851,724,875.84
  5. Step 5: Solve for x
    x = 390,851,724,875.84/720,033.35
  6. Step 6: Final answer
    x = 542,824.48

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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.