Home / 647,171.20-971,332.80-380,598.40

Finding the Fourth Proportional to 647,171.20, 971,332.80 and 380,598.40

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Solution

The fourth proportional to 647,171.20, 971,332.80 and 380,598.40 is: 571,236.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,171.20 : 971,332.80 = 380,598.40 : x
  2. Step 2: Convert to fraction form
    647,171.20/971,332.80 = 380,598.40/x
  3. Step 3: Cross multiply
    647,171.20x = 971,332.80 × 380,598.40
  4. Step 4: Simplify right side
    647,171.20x = 369,687,709,547.52
  5. Step 5: Solve for x
    x = 369,687,709,547.52/647,171.20
  6. Step 6: Final answer
    x = 571,236.34

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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.