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Finding the Fourth Proportional to 903,362.70, 1,243,510.92 and 780,798.90

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Solution

The fourth proportional to 903,362.70, 1,243,510.92 and 780,798.90 is: 1,074,797.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,362.70 : 1,243,510.92 = 780,798.90 : x
  2. Step 2: Convert to fraction form
    903,362.70/1,243,510.92 = 780,798.90/x
  3. Step 3: Cross multiply
    903,362.70x = 1,243,510.92 × 780,798.90
  4. Step 4: Simplify right side
    903,362.70x = 970,931,958,473.99
  5. Step 5: Solve for x
    x = 970,931,958,473.99/903,362.70
  6. Step 6: Final answer
    x = 1,074,797.49

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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.