Home / 453,285.80-679,636.86-390,125.16

Finding the Fourth Proportional to 453,285.80, 679,636.86 and 390,125.16

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Solution

The fourth proportional to 453,285.80, 679,636.86 and 390,125.16 is: 584,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,285.80 : 679,636.86 = 390,125.16 : x
  2. Step 2: Convert to fraction form
    453,285.80/679,636.86 = 390,125.16/x
  3. Step 3: Cross multiply
    453,285.80x = 679,636.86 × 390,125.16
  4. Step 4: Simplify right side
    453,285.80x = 265,143,438,749.40
  5. Step 5: Solve for x
    x = 265,143,438,749.40/453,285.80
  6. Step 6: Final answer
    x = 584,936.56

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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.