Home / 742,420.91-1,024,541.51-402,889.16

Finding the Fourth Proportional to 742,420.91, 1,024,541.51 and 402,889.16

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Solution

The fourth proportional to 742,420.91, 1,024,541.51 and 402,889.16 is: 555,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,420.91 : 1,024,541.51 = 402,889.16 : x
  2. Step 2: Convert to fraction form
    742,420.91/1,024,541.51 = 402,889.16/x
  3. Step 3: Cross multiply
    742,420.91x = 1,024,541.51 × 402,889.16
  4. Step 4: Simplify right side
    742,420.91x = 412,776,661,211.88
  5. Step 5: Solve for x
    x = 412,776,661,211.88/742,420.91
  6. Step 6: Final answer
    x = 555,987.39

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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.