Home / 442,859,206.40-664,288,809.60-258,437,369.60

Finding the Fourth Proportional to 442,859,206.40, 664,288,809.60 and 258,437,369.60

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Solution

The fourth proportional to 442,859,206.40, 664,288,809.60 and 258,437,369.60 is: 387,656,054.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,859,206.40 : 664,288,809.60 = 258,437,369.60 : x
  2. Step 2: Convert to fraction form
    442,859,206.40/664,288,809.60 = 258,437,369.60/x
  3. Step 3: Cross multiply
    442,859,206.40x = 664,288,809.60 × 258,437,369.60
  4. Step 4: Simplify right side
    442,859,206.40x = 171,677,052,607,739,232
  5. Step 5: Solve for x
    x = 171,677,052,607,739,232/442,859,206.40
  6. Step 6: Final answer
    x = 387,656,054.40

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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.