Home / 623,621.60-936,123.60-387,231.20

Finding the Fourth Proportional to 623,621.60, 936,123.60 and 387,231.20

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Solution

The fourth proportional to 623,621.60, 936,123.60 and 387,231.20 is: 581,275.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,621.60 : 936,123.60 = 387,231.20 : x
  2. Step 2: Convert to fraction form
    623,621.60/936,123.60 = 387,231.20/x
  3. Step 3: Cross multiply
    623,621.60x = 936,123.60 × 387,231.20
  4. Step 4: Simplify right side
    623,621.60x = 362,496,264,976.32
  5. Step 5: Solve for x
    x = 362,496,264,976.32/623,621.60
  6. Step 6: Final answer
    x = 581,275.99

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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.