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Finding the Fourth Proportional to 1,988,895.53, 2,983,535.57 and 790,548.93

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Solution

The fourth proportional to 1,988,895.53, 2,983,535.57 and 790,548.93 is: 1,185,899.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988,895.53 : 2,983,535.57 = 790,548.93 : x
  2. Step 2: Convert to fraction form
    1,988,895.53/2,983,535.57 = 790,548.93/x
  3. Step 3: Cross multiply
    1,988,895.53x = 2,983,535.57 × 790,548.93
  4. Step 4: Simplify right side
    1,988,895.53x = 2,358,630,854,456.81
  5. Step 5: Solve for x
    x = 2,358,630,854,456.81/1,988,895.53
  6. Step 6: Final answer
    x = 1,185,899.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.