Home / 398,601,145.80-597,901,718.70-315,377,485.20

Finding the Fourth Proportional to 398,601,145.80, 597,901,718.70 and 315,377,485.20

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Solution

The fourth proportional to 398,601,145.80, 597,901,718.70 and 315,377,485.20 is: 473,066,227.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,601,145.80 : 597,901,718.70 = 315,377,485.20 : x
  2. Step 2: Convert to fraction form
    398,601,145.80/597,901,718.70 = 315,377,485.20/x
  3. Step 3: Cross multiply
    398,601,145.80x = 597,901,718.70 × 315,377,485.20
  4. Step 4: Simplify right side
    398,601,145.80x = 188,564,740,440,363,808
  5. Step 5: Solve for x
    x = 188,564,740,440,363,808/398,601,145.80
  6. Step 6: Final answer
    x = 473,066,227.80

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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.