Home / 690,900.38-1,035,648.48-286,312.71

Finding the Fourth Proportional to 690,900.38, 1,035,648.48 and 286,312.71

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Solution

The fourth proportional to 690,900.38, 1,035,648.48 and 286,312.71 is: 429,178.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,900.38 : 1,035,648.48 = 286,312.71 : x
  2. Step 2: Convert to fraction form
    690,900.38/1,035,648.48 = 286,312.71/x
  3. Step 3: Cross multiply
    690,900.38x = 1,035,648.48 × 286,312.71
  4. Step 4: Simplify right side
    690,900.38x = 296,519,321,484.62
  5. Step 5: Solve for x
    x = 296,519,321,484.62/690,900.38
  6. Step 6: Final answer
    x = 429,178.11

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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.