Home / 742,420.44-1,024,534.22-402,888.68

Finding the Fourth Proportional to 742,420.44, 1,024,534.22 and 402,888.68

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Solution

The fourth proportional to 742,420.44, 1,024,534.22 and 402,888.68 is: 555,983.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,420.44 : 1,024,534.22 = 402,888.68 : x
  2. Step 2: Convert to fraction form
    742,420.44/1,024,534.22 = 402,888.68/x
  3. Step 3: Cross multiply
    742,420.44x = 1,024,534.22 × 402,888.68
  4. Step 4: Simplify right side
    742,420.44x = 412,773,239,510.63
  5. Step 5: Solve for x
    x = 412,773,239,510.63/742,420.44
  6. Step 6: Final answer
    x = 555,983.13

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Double scale
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Similar ratio
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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.