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Finding the Fourth Proportional to 703,148.65, 970,345.42 and 380,857.75

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Solution

The fourth proportional to 703,148.65, 970,345.42 and 380,857.75 is: 525,583.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,148.65 : 970,345.42 = 380,857.75 : x
  2. Step 2: Convert to fraction form
    703,148.65/970,345.42 = 380,857.75/x
  3. Step 3: Cross multiply
    703,148.65x = 970,345.42 × 380,857.75
  4. Step 4: Simplify right side
    703,148.65x = 369,563,577,153.19
  5. Step 5: Solve for x
    x = 369,563,577,153.19/703,148.65
  6. Step 6: Final answer
    x = 525,583.85

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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.