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Finding the Fourth Proportional to 560,414.40, 840,621.60 and 493,929.60

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Solution

The fourth proportional to 560,414.40, 840,621.60 and 493,929.60 is: 740,894.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,414.40 : 840,621.60 = 493,929.60 : x
  2. Step 2: Convert to fraction form
    560,414.40/840,621.60 = 493,929.60/x
  3. Step 3: Cross multiply
    560,414.40x = 840,621.60 × 493,929.60
  4. Step 4: Simplify right side
    560,414.40x = 415,207,890,639.36
  5. Step 5: Solve for x
    x = 415,207,890,639.36/560,414.40
  6. Step 6: Final answer
    x = 740,894.40

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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.