Home / 645,142,257.18-967,718,986.17-208,442,988.03

Finding the Fourth Proportional to 645,142,257.18, 967,718,986.17 and 208,442,988.03

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Solution

The fourth proportional to 645,142,257.18, 967,718,986.17 and 208,442,988.03 is: 312,666,291.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,142,257.18 : 967,718,986.17 = 208,442,988.03 : x
  2. Step 2: Convert to fraction form
    645,142,257.18/967,718,986.17 = 208,442,988.03/x
  3. Step 3: Cross multiply
    645,142,257.18x = 967,718,986.17 × 208,442,988.03
  4. Step 4: Simplify right side
    645,142,257.18x = 201,714,237,050,637,024
  5. Step 5: Solve for x
    x = 201,714,237,050,637,024/645,142,257.18
  6. Step 6: Final answer
    x = 312,666,291.51

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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.