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Finding the Fourth Proportional to 567,271.17, 782,819.79 and 309,154.76

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Solution

The fourth proportional to 567,271.17, 782,819.79 and 309,154.76 is: 426,625.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,271.17 : 782,819.79 = 309,154.76 : x
  2. Step 2: Convert to fraction form
    567,271.17/782,819.79 = 309,154.76/x
  3. Step 3: Cross multiply
    567,271.17x = 782,819.79 × 309,154.76
  4. Step 4: Simplify right side
    567,271.17x = 242,012,460,386.60
  5. Step 5: Solve for x
    x = 242,012,460,386.60/567,271.17
  6. Step 6: Final answer
    x = 426,625.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.