Home / 906,645.80-1,359,968.70-640,925.30

Finding the Fourth Proportional to 906,645.80, 1,359,968.70 and 640,925.30

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Solution

The fourth proportional to 906,645.80, 1,359,968.70 and 640,925.30 is: 961,387.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,645.80 : 1,359,968.70 = 640,925.30 : x
  2. Step 2: Convert to fraction form
    906,645.80/1,359,968.70 = 640,925.30/x
  3. Step 3: Cross multiply
    906,645.80x = 1,359,968.70 × 640,925.30
  4. Step 4: Simplify right side
    906,645.80x = 871,638,347,038.11
  5. Step 5: Solve for x
    x = 871,638,347,038.11/906,645.80
  6. Step 6: Final answer
    x = 961,387.95

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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.