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Finding the Fourth Proportional to 679,424.76, 937,624.22 and 369,348.20

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Solution

The fourth proportional to 679,424.76, 937,624.22 and 369,348.20 is: 509,710.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,424.76 : 937,624.22 = 369,348.20 : x
  2. Step 2: Convert to fraction form
    679,424.76/937,624.22 = 369,348.20/x
  3. Step 3: Cross multiply
    679,424.76x = 937,624.22 × 369,348.20
  4. Step 4: Simplify right side
    679,424.76x = 346,309,817,933.40
  5. Step 5: Solve for x
    x = 346,309,817,933.40/679,424.76
  6. Step 6: Final answer
    x = 509,710.33

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Half scale
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Double scale
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Similar ratio
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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.