Home / 465,354,048.71-642,188,430.57-256,513,678.94

Finding the Fourth Proportional to 465,354,048.71, 642,188,430.57 and 256,513,678.94

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Solution

The fourth proportional to 465,354,048.71, 642,188,430.57 and 256,513,678.94 is: 353,988,790.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,354,048.71 : 642,188,430.57 = 256,513,678.94 : x
  2. Step 2: Convert to fraction form
    465,354,048.71/642,188,430.57 = 256,513,678.94/x
  3. Step 3: Cross multiply
    465,354,048.71x = 642,188,430.57 × 256,513,678.94
  4. Step 4: Simplify right side
    465,354,048.71x = 164,730,116,895,004,544
  5. Step 5: Solve for x
    x = 164,730,116,895,004,544/465,354,048.71
  6. Step 6: Final answer
    x = 353,988,790.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.