Home / 749,477.76-1,124,218.56-306,245.76

Finding the Fourth Proportional to 749,477.76, 1,124,218.56 and 306,245.76

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Solution

The fourth proportional to 749,477.76, 1,124,218.56 and 306,245.76 is: 459,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,477.76 : 1,124,218.56 = 306,245.76 : x
  2. Step 2: Convert to fraction form
    749,477.76/1,124,218.56 = 306,245.76/x
  3. Step 3: Cross multiply
    749,477.76x = 1,124,218.56 × 306,245.76
  4. Step 4: Simplify right side
    749,477.76x = 344,287,167,313.31
  5. Step 5: Solve for x
    x = 344,287,167,313.31/749,477.76
  6. Step 6: Final answer
    x = 459,369.42

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Half scale
Find fourth proportional to 1,498,955.52, 2,248,437.12 and 612,491.52
Double scale
Find fourth proportional to 749,478.76, 1,124,220.06 and 306,246.76
Similar ratio
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1.5x scale

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.