Home / 389,038.41-583,557.62-300,421.17

Finding the Fourth Proportional to 389,038.41, 583,557.62 and 300,421.17

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Solution

The fourth proportional to 389,038.41, 583,557.62 and 300,421.17 is: 450,631.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,038.41 : 583,557.62 = 300,421.17 : x
  2. Step 2: Convert to fraction form
    389,038.41/583,557.62 = 300,421.17/x
  3. Step 3: Cross multiply
    389,038.41x = 583,557.62 × 300,421.17
  4. Step 4: Simplify right side
    389,038.41x = 175,313,061,460.71
  5. Step 5: Solve for x
    x = 175,313,061,460.71/389,038.41
  6. Step 6: Final answer
    x = 450,631.76

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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.