Home / 690,230.40-1,035,492.80-390,851.20

Finding the Fourth Proportional to 690,230.40, 1,035,492.80 and 390,851.20

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Solution

The fourth proportional to 690,230.40, 1,035,492.80 and 390,851.20 is: 586,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,230.40 : 1,035,492.80 = 390,851.20 : x
  2. Step 2: Convert to fraction form
    690,230.40/1,035,492.80 = 390,851.20/x
  3. Step 3: Cross multiply
    690,230.40x = 1,035,492.80 × 390,851.20
  4. Step 4: Simplify right side
    690,230.40x = 404,723,603,471.36
  5. Step 5: Solve for x
    x = 404,723,603,471.36/690,230.40
  6. Step 6: Final answer
    x = 586,360.15

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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.