Home / 678,415.60-1,017,623.40-383,503.60

Finding the Fourth Proportional to 678,415.60, 1,017,623.40 and 383,503.60

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Solution

The fourth proportional to 678,415.60, 1,017,623.40 and 383,503.60 is: 575,255.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,415.60 : 1,017,623.40 = 383,503.60 : x
  2. Step 2: Convert to fraction form
    678,415.60/1,017,623.40 = 383,503.60/x
  3. Step 3: Cross multiply
    678,415.60x = 1,017,623.40 × 383,503.60
  4. Step 4: Simplify right side
    678,415.60x = 390,262,237,344.24
  5. Step 5: Solve for x
    x = 390,262,237,344.24/678,415.60
  6. Step 6: Final answer
    x = 575,255.40

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