Home / 1,312,005.12-1,968,284.16-425,472

Finding the Fourth Proportional to 1,312,005.12, 1,968,284.16 and 425,472

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Solution

The fourth proportional to 1,312,005.12, 1,968,284.16 and 425,472 is: 638,297.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,005.12 : 1,968,284.16 = 425,472 : x
  2. Step 2: Convert to fraction form
    1,312,005.12/1,968,284.16 = 425,472/x
  3. Step 3: Cross multiply
    1,312,005.12x = 1,968,284.16 × 425,472
  4. Step 4: Simplify right side
    1,312,005.12x = 837,449,798,123.52
  5. Step 5: Solve for x
    x = 837,449,798,123.52/1,312,005.12
  6. Step 6: Final answer
    x = 638,297.66

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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.