Home / 620,355.81-929,836.16-315,895.65

Finding the Fourth Proportional to 620,355.81, 929,836.16 and 315,895.65

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Solution

The fourth proportional to 620,355.81, 929,836.16 and 315,895.65 is: 473,488.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,355.81 : 929,836.16 = 315,895.65 : x
  2. Step 2: Convert to fraction form
    620,355.81/929,836.16 = 315,895.65/x
  3. Step 3: Cross multiply
    620,355.81x = 929,836.16 × 315,895.65
  4. Step 4: Simplify right side
    620,355.81x = 293,731,194,274.95
  5. Step 5: Solve for x
    x = 293,731,194,274.95/620,355.81
  6. Step 6: Final answer
    x = 473,488.26

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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.