Home / 670,683.40-1,006,025.08-390,003.80

Finding the Fourth Proportional to 670,683.40, 1,006,025.08 and 390,003.80

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Solution

The fourth proportional to 670,683.40, 1,006,025.08 and 390,003.80 is: 585,005.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,683.40 : 1,006,025.08 = 390,003.80 : x
  2. Step 2: Convert to fraction form
    670,683.40/1,006,025.08 = 390,003.80/x
  3. Step 3: Cross multiply
    670,683.40x = 1,006,025.08 × 390,003.80
  4. Step 4: Simplify right side
    670,683.40x = 392,353,604,095.30
  5. Step 5: Solve for x
    x = 392,353,604,095.30/670,683.40
  6. Step 6: Final answer
    x = 585,005.69

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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.