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Finding the Fourth Proportional to 636,497.62, 880,679.72 and 554,995.71

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Solution

The fourth proportional to 636,497.62, 880,679.72 and 554,995.71 is: 767,910.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,497.62 : 880,679.72 = 554,995.71 : x
  2. Step 2: Convert to fraction form
    636,497.62/880,679.72 = 554,995.71/x
  3. Step 3: Cross multiply
    636,497.62x = 880,679.72 × 554,995.71
  4. Step 4: Simplify right side
    636,497.62x = 488,773,466,484.00
  5. Step 5: Solve for x
    x = 488,773,466,484.00/636,497.62
  6. Step 6: Final answer
    x = 767,910.91

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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.