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Finding the Fourth Proportional to 970,798.40, 1,455,808.80 and 339,387.20

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Solution

The fourth proportional to 970,798.40, 1,455,808.80 and 339,387.20 is: 508,944.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    970,798.40 : 1,455,808.80 = 339,387.20 : x
  2. Step 2: Convert to fraction form
    970,798.40/1,455,808.80 = 339,387.20/x
  3. Step 3: Cross multiply
    970,798.40x = 1,455,808.80 × 339,387.20
  4. Step 4: Simplify right side
    970,798.40x = 494,082,872,367.36
  5. Step 5: Solve for x
    x = 494,082,872,367.36/970,798.40
  6. Step 6: Final answer
    x = 508,944.88

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1.5x scale

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.