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Finding the Fourth Proportional to 718,952.58, 992,270.88 and 428,599.77

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Solution

The fourth proportional to 718,952.58, 992,270.88 and 428,599.77 is: 591,537.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,952.58 : 992,270.88 = 428,599.77 : x
  2. Step 2: Convert to fraction form
    718,952.58/992,270.88 = 428,599.77/x
  3. Step 3: Cross multiply
    718,952.58x = 992,270.88 × 428,599.77
  4. Step 4: Simplify right side
    718,952.58x = 425,287,070,945.70
  5. Step 5: Solve for x
    x = 425,287,070,945.70/718,952.58
  6. Step 6: Final answer
    x = 591,537.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.