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Finding the Fourth Proportional to 703,015.51, 970,156.23 and 380,718.13

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Solution

The fourth proportional to 703,015.51, 970,156.23 and 380,718.13 is: 525,388.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,015.51 : 970,156.23 = 380,718.13 : x
  2. Step 2: Convert to fraction form
    703,015.51/970,156.23 = 380,718.13/x
  3. Step 3: Cross multiply
    703,015.51x = 970,156.23 × 380,718.13
  4. Step 4: Simplify right side
    703,015.51x = 369,356,065,693.45
  5. Step 5: Solve for x
    x = 369,356,065,693.45/703,015.51
  6. Step 6: Final answer
    x = 525,388.22

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Double scale
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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.