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Finding the Fourth Proportional to 424,939.40, 637,409.10 and 400,007.60

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Solution

The fourth proportional to 424,939.40, 637,409.10 and 400,007.60 is: 600,011.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,939.40 : 637,409.10 = 400,007.60 : x
  2. Step 2: Convert to fraction form
    424,939.40/637,409.10 = 400,007.60/x
  3. Step 3: Cross multiply
    424,939.40x = 637,409.10 × 400,007.60
  4. Step 4: Simplify right side
    424,939.40x = 254,968,484,309.16
  5. Step 5: Solve for x
    x = 254,968,484,309.16/424,939.40
  6. Step 6: Final answer
    x = 600,011.40

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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.