Home / 657,312.12-986,376.36-420,824.52

Finding the Fourth Proportional to 657,312.12, 986,376.36 and 420,824.52

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Solution

The fourth proportional to 657,312.12, 986,376.36 and 420,824.52 is: 631,498.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,312.12 : 986,376.36 = 420,824.52 : x
  2. Step 2: Convert to fraction form
    657,312.12/986,376.36 = 420,824.52/x
  3. Step 3: Cross multiply
    657,312.12x = 986,376.36 × 420,824.52
  4. Step 4: Simplify right side
    657,312.12x = 415,091,358,236.35
  5. Step 5: Solve for x
    x = 415,091,358,236.35/657,312.12
  6. Step 6: Final answer
    x = 631,498.11

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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.