Home / 1,018,388.70-1,405,398.69-559,509.18

Finding the Fourth Proportional to 1,018,388.70, 1,405,398.69 and 559,509.18

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Solution

The fourth proportional to 1,018,388.70, 1,405,398.69 and 559,509.18 is: 772,134.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018,388.70 : 1,405,398.69 = 559,509.18 : x
  2. Step 2: Convert to fraction form
    1,018,388.70/1,405,398.69 = 559,509.18/x
  3. Step 3: Cross multiply
    1,018,388.70x = 1,405,398.69 × 559,509.18
  4. Step 4: Simplify right side
    1,018,388.70x = 786,333,468,614.97
  5. Step 5: Solve for x
    x = 786,333,468,614.97/1,018,388.70
  6. Step 6: Final answer
    x = 772,134.91

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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.