Home / 742,323.94-1,024,139.64-420,030.61

Finding the Fourth Proportional to 742,323.94, 1,024,139.64 and 420,030.61

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Solution

The fourth proportional to 742,323.94, 1,024,139.64 and 420,030.61 is: 579,490.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,323.94 : 1,024,139.64 = 420,030.61 : x
  2. Step 2: Convert to fraction form
    742,323.94/1,024,139.64 = 420,030.61/x
  3. Step 3: Cross multiply
    742,323.94x = 1,024,139.64 × 420,030.61
  4. Step 4: Simplify right side
    742,323.94x = 430,169,997,714.38
  5. Step 5: Solve for x
    x = 430,169,997,714.38/742,323.94
  6. Step 6: Final answer
    x = 579,490.94

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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.