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Finding the Fourth Proportional to 710,959.40, 1,066,899.90 and 411,439.40

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Solution

The fourth proportional to 710,959.40, 1,066,899.90 and 411,439.40 is: 617,425.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,959.40 : 1,066,899.90 = 411,439.40 : x
  2. Step 2: Convert to fraction form
    710,959.40/1,066,899.90 = 411,439.40/x
  3. Step 3: Cross multiply
    710,959.40x = 1,066,899.90 × 411,439.40
  4. Step 4: Simplify right side
    710,959.40x = 438,964,654,716.06
  5. Step 5: Solve for x
    x = 438,964,654,716.06/710,959.40
  6. Step 6: Final answer
    x = 617,425.77

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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.