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Finding the Fourth Proportional to 709,269.88, 977,649.01 and 479,743.42

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Solution

The fourth proportional to 709,269.88, 977,649.01 and 479,743.42 is: 661,272.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,269.88 : 977,649.01 = 479,743.42 : x
  2. Step 2: Convert to fraction form
    709,269.88/977,649.01 = 479,743.42/x
  3. Step 3: Cross multiply
    709,269.88x = 977,649.01 × 479,743.42
  4. Step 4: Simplify right side
    709,269.88x = 469,020,679,617.01
  5. Step 5: Solve for x
    x = 469,020,679,617.01/709,269.88
  6. Step 6: Final answer
    x = 661,272.52

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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.