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Finding the Fourth Proportional to 638,671.50, 958,007.25 and 358,210.62

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Solution

The fourth proportional to 638,671.50, 958,007.25 and 358,210.62 is: 537,315.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,671.50 : 958,007.25 = 358,210.62 : x
  2. Step 2: Convert to fraction form
    638,671.50/958,007.25 = 358,210.62/x
  3. Step 3: Cross multiply
    638,671.50x = 958,007.25 × 358,210.62
  4. Step 4: Simplify right side
    638,671.50x = 343,168,370,987.00
  5. Step 5: Solve for x
    x = 343,168,370,987.00/638,671.50
  6. Step 6: Final answer
    x = 537,315.93

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.