Home / 521,749.10-783,574.05-456,430.70

Finding the Fourth Proportional to 521,749.10, 783,574.05 and 456,430.70

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Solution

The fourth proportional to 521,749.10, 783,574.05 and 456,430.70 is: 685,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,749.10 : 783,574.05 = 456,430.70 : x
  2. Step 2: Convert to fraction form
    521,749.10/783,574.05 = 456,430.70/x
  3. Step 3: Cross multiply
    521,749.10x = 783,574.05 × 456,430.70
  4. Step 4: Simplify right side
    521,749.10x = 357,647,252,143.34
  5. Step 5: Solve for x
    x = 357,647,252,143.34/521,749.10
  6. Step 6: Final answer
    x = 685,477.47

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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.