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Finding the Fourth Proportional to 1,426,836.08, 1,968,981.51 and 782,242.16

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Solution

The fourth proportional to 1,426,836.08, 1,968,981.51 and 782,242.16 is: 1,079,465.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,426,836.08 : 1,968,981.51 = 782,242.16 : x
  2. Step 2: Convert to fraction form
    1,426,836.08/1,968,981.51 = 782,242.16/x
  3. Step 3: Cross multiply
    1,426,836.08x = 1,968,981.51 × 782,242.16
  4. Step 4: Simplify right side
    1,426,836.08x = 1,540,220,349,382.46
  5. Step 5: Solve for x
    x = 1,540,220,349,382.46/1,426,836.08
  6. Step 6: Final answer
    x = 1,079,465.52

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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.