Home / 442,902,647.20-664,353,970.80-290,020,266.40

Finding the Fourth Proportional to 442,902,647.20, 664,353,970.80 and 290,020,266.40

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Solution

The fourth proportional to 442,902,647.20, 664,353,970.80 and 290,020,266.40 is: 435,030,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,902,647.20 : 664,353,970.80 = 290,020,266.40 : x
  2. Step 2: Convert to fraction form
    442,902,647.20/664,353,970.80 = 290,020,266.40/x
  3. Step 3: Cross multiply
    442,902,647.20x = 664,353,970.80 × 290,020,266.40
  4. Step 4: Simplify right side
    442,902,647.20x = 192,676,115,595,313,792
  5. Step 5: Solve for x
    x = 192,676,115,595,313,792/442,902,647.20
  6. Step 6: Final answer
    x = 435,030,399.60

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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.