Home / 644,967.12-890,296.14-484,286.40

Finding the Fourth Proportional to 644,967.12, 890,296.14 and 484,286.40

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Solution

The fourth proportional to 644,967.12, 890,296.14 and 484,286.40 is: 668,496.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,967.12 : 890,296.14 = 484,286.40 : x
  2. Step 2: Convert to fraction form
    644,967.12/890,296.14 = 484,286.40/x
  3. Step 3: Cross multiply
    644,967.12x = 890,296.14 × 484,286.40
  4. Step 4: Simplify right side
    644,967.12x = 431,158,312,574.50
  5. Step 5: Solve for x
    x = 431,158,312,574.50/644,967.12
  6. Step 6: Final answer
    x = 668,496.58

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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.