Home / 412,192,875.40-618,289,313.10-208,119,531.40

Finding the Fourth Proportional to 412,192,875.40, 618,289,313.10 and 208,119,531.40

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Solution

The fourth proportional to 412,192,875.40, 618,289,313.10 and 208,119,531.40 is: 312,179,297.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,192,875.40 : 618,289,313.10 = 208,119,531.40 : x
  2. Step 2: Convert to fraction form
    412,192,875.40/618,289,313.10 = 208,119,531.40/x
  3. Step 3: Cross multiply
    412,192,875.40x = 618,289,313.10 × 208,119,531.40
  4. Step 4: Simplify right side
    412,192,875.40x = 128,678,082,111,999,888
  5. Step 5: Solve for x
    x = 128,678,082,111,999,888/412,192,875.40
  6. Step 6: Final answer
    x = 312,179,297.10

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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.