Home / 747,828.09-1,119,954.06-431,325.45

Finding the Fourth Proportional to 747,828.09, 1,119,954.06 and 431,325.45

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Solution

The fourth proportional to 747,828.09, 1,119,954.06 and 431,325.45 is: 645,956.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    747,828.09 : 1,119,954.06 = 431,325.45 : x
  2. Step 2: Convert to fraction form
    747,828.09/1,119,954.06 = 431,325.45/x
  3. Step 3: Cross multiply
    747,828.09x = 1,119,954.06 × 431,325.45
  4. Step 4: Simplify right side
    747,828.09x = 483,064,688,908.83
  5. Step 5: Solve for x
    x = 483,064,688,908.83/747,828.09
  6. Step 6: Final answer
    x = 645,956.87

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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.