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Finding the Fourth Proportional to 613,907.40, 920,636.58 and 234,640.59

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Solution

The fourth proportional to 613,907.40, 920,636.58 and 234,640.59 is: 351,875.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,907.40 : 920,636.58 = 234,640.59 : x
  2. Step 2: Convert to fraction form
    613,907.40/920,636.58 = 234,640.59/x
  3. Step 3: Cross multiply
    613,907.40x = 920,636.58 × 234,640.59
  4. Step 4: Simplify right side
    613,907.40x = 216,018,710,306.78
  5. Step 5: Solve for x
    x = 216,018,710,306.78/613,907.40
  6. Step 6: Final answer
    x = 351,875.07

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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.