Home / 985,282.20-1,478,312.10-386,141.40

Finding the Fourth Proportional to 985,282.20, 1,478,312.10 and 386,141.40

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Solution

The fourth proportional to 985,282.20, 1,478,312.10 and 386,141.40 is: 579,364.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,282.20 : 1,478,312.10 = 386,141.40 : x
  2. Step 2: Convert to fraction form
    985,282.20/1,478,312.10 = 386,141.40/x
  3. Step 3: Cross multiply
    985,282.20x = 1,478,312.10 × 386,141.40
  4. Step 4: Simplify right side
    985,282.20x = 570,837,503,930.94
  5. Step 5: Solve for x
    x = 570,837,503,930.94/985,282.20
  6. Step 6: Final answer
    x = 579,364.47

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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.