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Finding the Fourth Proportional to 869,145.60, 1,304,301.60 and 513,782.40

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Solution

The fourth proportional to 869,145.60, 1,304,301.60 and 513,782.40 is: 771,018.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,145.60 : 1,304,301.60 = 513,782.40 : x
  2. Step 2: Convert to fraction form
    869,145.60/1,304,301.60 = 513,782.40/x
  3. Step 3: Cross multiply
    869,145.60x = 1,304,301.60 × 513,782.40
  4. Step 4: Simplify right side
    869,145.60x = 670,127,206,371.84
  5. Step 5: Solve for x
    x = 670,127,206,371.84/869,145.60
  6. Step 6: Final answer
    x = 771,018.35

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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.