Home / 938,690.40-1,408,047.12-620,876.64

Finding the Fourth Proportional to 938,690.40, 1,408,047.12 and 620,876.64

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Solution

The fourth proportional to 938,690.40, 1,408,047.12 and 620,876.64 is: 931,322.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,690.40 : 1,408,047.12 = 620,876.64 : x
  2. Step 2: Convert to fraction form
    938,690.40/1,408,047.12 = 620,876.64/x
  3. Step 3: Cross multiply
    938,690.40x = 1,408,047.12 × 620,876.64
  4. Step 4: Simplify right side
    938,690.40x = 874,223,564,827.28
  5. Step 5: Solve for x
    x = 874,223,564,827.28/938,690.40
  6. Step 6: Final answer
    x = 931,322.58

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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.