Home / 649,691,965.80-895,583,048.04-398,331,002.16

Finding the Fourth Proportional to 649,691,965.80, 895,583,048.04 and 398,331,002.16

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Solution

The fourth proportional to 649,691,965.80, 895,583,048.04 and 398,331,002.16 is: 549,088,663.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,691,965.80 : 895,583,048.04 = 398,331,002.16 : x
  2. Step 2: Convert to fraction form
    649,691,965.80/895,583,048.04 = 398,331,002.16/x
  3. Step 3: Cross multiply
    649,691,965.80x = 895,583,048.04 × 398,331,002.16
  4. Step 4: Simplify right side
    649,691,965.80x = 356,738,493,043,280,640
  5. Step 5: Solve for x
    x = 356,738,493,043,280,640/649,691,965.80
  6. Step 6: Final answer
    x = 549,088,663.28

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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.