Home / 839,723,137.72-1,159,048,417.98-487,412,632.24

Finding the Fourth Proportional to 839,723,137.72, 1,159,048,417.98 and 487,412,632.24

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Solution

The fourth proportional to 839,723,137.72, 1,159,048,417.98 and 487,412,632.24 is: 672,763,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,723,137.72 : 1,159,048,417.98 = 487,412,632.24 : x
  2. Step 2: Convert to fraction form
    839,723,137.72/1,159,048,417.98 = 487,412,632.24/x
  3. Step 3: Cross multiply
    839,723,137.72x = 1,159,048,417.98 × 487,412,632.24
  4. Step 4: Simplify right side
    839,723,137.72x = 564,934,840,301,239,552
  5. Step 5: Solve for x
    x = 564,934,840,301,239,552/839,723,137.72
  6. Step 6: Final answer
    x = 672,763,217.93

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1.5x scale

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.