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Finding the Fourth Proportional to 507,477.79, 700,342.10 and 281,108.71

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Solution

The fourth proportional to 507,477.79, 700,342.10 and 281,108.71 is: 387,942.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,477.79 : 700,342.10 = 281,108.71 : x
  2. Step 2: Convert to fraction form
    507,477.79/700,342.10 = 281,108.71/x
  3. Step 3: Cross multiply
    507,477.79x = 700,342.10 × 281,108.71
  4. Step 4: Simplify right side
    507,477.79x = 196,872,264,289.69
  5. Step 5: Solve for x
    x = 196,872,264,289.69/507,477.79
  6. Step 6: Final answer
    x = 387,942.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.