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Finding the Fourth Proportional to 1,313,807.30, 1,971,002.55 and 603,664.10

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Solution

The fourth proportional to 1,313,807.30, 1,971,002.55 and 603,664.10 is: 905,630.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,313,807.30 : 1,971,002.55 = 603,664.10 : x
  2. Step 2: Convert to fraction form
    1,313,807.30/1,971,002.55 = 603,664.10/x
  3. Step 3: Cross multiply
    1,313,807.30x = 1,971,002.55 × 603,664.10
  4. Step 4: Simplify right side
    1,313,807.30x = 1,189,823,480,443.46
  5. Step 5: Solve for x
    x = 1,189,823,480,443.46/1,313,807.30
  6. Step 6: Final answer
    x = 905,630.13

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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.