Home / 812,088.72-1,120,424.80-472,491.36

Finding the Fourth Proportional to 812,088.72, 1,120,424.80 and 472,491.36

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Solution

The fourth proportional to 812,088.72, 1,120,424.80 and 472,491.36 is: 651,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,088.72 : 1,120,424.80 = 472,491.36 : x
  2. Step 2: Convert to fraction form
    812,088.72/1,120,424.80 = 472,491.36/x
  3. Step 3: Cross multiply
    812,088.72x = 1,120,424.80 × 472,491.36
  4. Step 4: Simplify right side
    812,088.72x = 529,391,037,529.73
  5. Step 5: Solve for x
    x = 529,391,037,529.73/812,088.72
  6. Step 6: Final answer
    x = 651,888.18

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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.