Home / 742,678.98-1,024,936.65-420,460.98

Finding the Fourth Proportional to 742,678.98, 1,024,936.65 and 420,460.98

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Solution

The fourth proportional to 742,678.98, 1,024,936.65 and 420,460.98 is: 580,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,678.98 : 1,024,936.65 = 420,460.98 : x
  2. Step 2: Convert to fraction form
    742,678.98/1,024,936.65 = 420,460.98/x
  3. Step 3: Cross multiply
    742,678.98x = 1,024,936.65 × 420,460.98
  4. Step 4: Simplify right side
    742,678.98x = 430,945,868,296.92
  5. Step 5: Solve for x
    x = 430,945,868,296.92/742,678.98
  6. Step 6: Final answer
    x = 580,258.60

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Double scale
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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.