Home / 690,234.40-1,035,498.80-390,855.20

Finding the Fourth Proportional to 690,234.40, 1,035,498.80 and 390,855.20

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Solution

The fourth proportional to 690,234.40, 1,035,498.80 and 390,855.20 is: 586,366.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,234.40 : 1,035,498.80 = 390,855.20 : x
  2. Step 2: Convert to fraction form
    690,234.40/1,035,498.80 = 390,855.20/x
  3. Step 3: Cross multiply
    690,234.40x = 1,035,498.80 × 390,855.20
  4. Step 4: Simplify right side
    690,234.40x = 404,730,090,573.76
  5. Step 5: Solve for x
    x = 404,730,090,573.76/690,234.40
  6. Step 6: Final answer
    x = 586,366.15

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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.