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Finding the Fourth Proportional to 1,375,732, 1,898,510.16 and 772,120

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Solution

The fourth proportional to 1,375,732, 1,898,510.16 and 772,120 is: 1,065,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375,732 : 1,898,510.16 = 772,120 : x
  2. Step 2: Convert to fraction form
    1,375,732/1,898,510.16 = 772,120/x
  3. Step 3: Cross multiply
    1,375,732x = 1,898,510.16 × 772,120
  4. Step 4: Simplify right side
    1,375,732x = 1,465,877,664,739.20
  5. Step 5: Solve for x
    x = 1,465,877,664,739.20/1,375,732
  6. Step 6: Final answer
    x = 1,065,525.60

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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.