Home / 509,257,685.43-763,342,686.86-290,436,853.68

Finding the Fourth Proportional to 509,257,685.43, 763,342,686.86 and 290,436,853.68

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Solution

The fourth proportional to 509,257,685.43, 763,342,686.86 and 290,436,853.68 is: 435,345,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,257,685.43 : 763,342,686.86 = 290,436,853.68 : x
  2. Step 2: Convert to fraction form
    509,257,685.43/763,342,686.86 = 290,436,853.68/x
  3. Step 3: Cross multiply
    509,257,685.43x = 763,342,686.86 × 290,436,853.68
  4. Step 4: Simplify right side
    509,257,685.43x = 221,702,848,249,803,712
  5. Step 5: Solve for x
    x = 221,702,848,249,803,712/509,257,685.43
  6. Step 6: Final answer
    x = 435,345,120.15

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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.