Home / 742,412.17-1,024,528.26-420,116.41

Finding the Fourth Proportional to 742,412.17, 1,024,528.26 and 420,116.41

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Solution

The fourth proportional to 742,412.17, 1,024,528.26 and 420,116.41 is: 579,760.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,412.17 : 1,024,528.26 = 420,116.41 : x
  2. Step 2: Convert to fraction form
    742,412.17/1,024,528.26 = 420,116.41/x
  3. Step 3: Cross multiply
    742,412.17x = 1,024,528.26 × 420,116.41
  4. Step 4: Simplify right side
    742,412.17x = 430,421,134,534.75
  5. Step 5: Solve for x
    x = 430,421,134,534.75/742,412.17
  6. Step 6: Final answer
    x = 579,760.34

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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.