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Finding the Fourth Proportional to 703,020.10, 970,155.75 and 380,727.58

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Solution

The fourth proportional to 703,020.10, 970,155.75 and 380,727.58 is: 525,397.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,020.10 : 970,155.75 = 380,727.58 : x
  2. Step 2: Convert to fraction form
    703,020.10/970,155.75 = 380,727.58/x
  3. Step 3: Cross multiply
    703,020.10x = 970,155.75 × 380,727.58
  4. Step 4: Simplify right side
    703,020.10x = 369,365,050,920.59
  5. Step 5: Solve for x
    x = 369,365,050,920.59/703,020.10
  6. Step 6: Final answer
    x = 525,397.57

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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.